diff --git a/sisr1/README.md b/sisr1/README.md
new file mode 100644
index 0000000..a85be3b
--- /dev/null
+++ b/sisr1/README.md
@@ -0,0 +1 @@
+Each folder bears the name of the TP (practical work) it belongs to.
\ No newline at end of file
diff --git a/sisr1/scripts/createLogins.sh b/sisr1/scripts/createLogins.sh
deleted file mode 100644
index e26f80f..0000000
--- a/sisr1/scripts/createLogins.sh
+++ /dev/null
@@ -1,19 +0,0 @@
-#!/bin/bash
-#
-rm ./logins.csv
-while read line
-do
-	touch ./temptp4.txt
-	file="./temptp4.txt"
-	echo $line > $file
-	surname=$(cut -d "," -f 1 $file)
-	name=$(cut -d "," -f 2 $file)
-	group=$(cut -d "," -f 5 $file)
-	initials=$(cut -c 1 $file)
-	id=$(echo $initials$name | tr [:upper:] [:lower:])
-	passwd=$(echo $RANDOM | md5sum | head -c 8)
-	echo $line ./temptp4.txt
-	echo $id","$passwd","$surname","$name","$group >> logins.csv
-	rm ./temptp4.txt
-
-done < ./Users.csv
diff --git a/sisr1/scripts/createUsers.sh b/sisr1/scripts/createUsers.sh
deleted file mode 100644
index f3eaad6..0000000
--- a/sisr1/scripts/createUsers.sh
+++ /dev/null
@@ -1,18 +0,0 @@
-#!/bin/bash
-#
-while read line
-do
-	touch ./temptp4.txt
-	file="./temptp4.txt"
-	echo $line > $file
-	user=$(cut -d "," -f 1 $file)
-	usergroup=$(cut -d "," -f 5 $file)
-	passwd=$(cut -d "," -f 2 $file)
-	if ! grep -q $usergroup /etc/group ; then
-		groupadd -f $usergroup
-	fi
-	useradd $user --create-home --groups $usergroup --shell /bin/bash
-	(echo $passwd ; echo $passwd) | passwd $user
-	chown -hR $user /home/$user
-	rm ./temptp4.txt
-done < ./logins.csv
diff --git a/sisr1/tp01-02/README.md b/sisr1/tp01-02/README.md
new file mode 100644
index 0000000..e295f33
--- /dev/null
+++ b/sisr1/tp01-02/README.md
@@ -0,0 +1 @@
+Each folder is called files_{Virtual Machine's name}.
\ No newline at end of file
diff --git a/sisr1/tp01-02/files_dhcp/README.md b/sisr1/tp01-02/files_dhcp/README.md
new file mode 100644
index 0000000..533f58f
--- /dev/null
+++ b/sisr1/tp01-02/files_dhcp/README.md
@@ -0,0 +1 @@
+Files for the srv-dhcp-ge Virtual Machine, from the FIRST and SECOND TPs.
\ No newline at end of file
diff --git a/sisr1/tp01-02/srv-dhcp/dhcpd.conf b/sisr1/tp01-02/files_dhcp/dhcpd.conf
similarity index 100%
rename from sisr1/tp01-02/srv-dhcp/dhcpd.conf
rename to sisr1/tp01-02/files_dhcp/dhcpd.conf
diff --git a/sisr1/tp01-02/srv-dhcp/hosts b/sisr1/tp01-02/files_dhcp/hosts
similarity index 100%
rename from sisr1/tp01-02/srv-dhcp/hosts
rename to sisr1/tp01-02/files_dhcp/hosts
diff --git a/sisr1/tp01-02/srv-dhcp/interfaces b/sisr1/tp01-02/files_dhcp/interfaces
similarity index 100%
rename from sisr1/tp01-02/srv-dhcp/interfaces
rename to sisr1/tp01-02/files_dhcp/interfaces
diff --git a/sisr1/tp01-02/srv-dhcp/isc-dhcp-server b/sisr1/tp01-02/files_dhcp/isc-dhcp-server
similarity index 100%
rename from sisr1/tp01-02/srv-dhcp/isc-dhcp-server
rename to sisr1/tp01-02/files_dhcp/isc-dhcp-server
diff --git a/sisr1/tp01-02/srv-dhcp/nat.sh b/sisr1/tp01-02/files_dhcp/nat.sh
similarity index 100%
rename from sisr1/tp01-02/srv-dhcp/nat.sh
rename to sisr1/tp01-02/files_dhcp/nat.sh
diff --git a/sisr1/tp01-02/files_dns1/README.md b/sisr1/tp01-02/files_dns1/README.md
new file mode 100644
index 0000000..3d11bb9
--- /dev/null
+++ b/sisr1/tp01-02/files_dns1/README.md
@@ -0,0 +1 @@
+Files for the srv-dns1-ge Virtual Machine, from the FIRST and SECOND TPs.
\ No newline at end of file
diff --git a/sisr1/tp01-02/srv-dns1/db.sio1lab.lan b/sisr1/tp01-02/files_dns1/db.sio1lab.lan
similarity index 100%
rename from sisr1/tp01-02/srv-dns1/db.sio1lab.lan
rename to sisr1/tp01-02/files_dns1/db.sio1lab.lan
diff --git a/sisr1/tp01-02/srv-dns1/db.sio1lab.lan.rev b/sisr1/tp01-02/files_dns1/db.sio1lab.lan.rev
similarity index 100%
rename from sisr1/tp01-02/srv-dns1/db.sio1lab.lan.rev
rename to sisr1/tp01-02/files_dns1/db.sio1lab.lan.rev
diff --git a/sisr1/tp01-02/srv-dns1/hosts b/sisr1/tp01-02/files_dns1/hosts
similarity index 100%
rename from sisr1/tp01-02/srv-dns1/hosts
rename to sisr1/tp01-02/files_dns1/hosts
diff --git a/sisr1/tp01-02/srv-dns1/interfaces b/sisr1/tp01-02/files_dns1/interfaces
similarity index 100%
rename from sisr1/tp01-02/srv-dns1/interfaces
rename to sisr1/tp01-02/files_dns1/interfaces
diff --git a/sisr1/tp01-02/srv-dns1/named.conf.local b/sisr1/tp01-02/files_dns1/named.conf.local
similarity index 100%
rename from sisr1/tp01-02/srv-dns1/named.conf.local
rename to sisr1/tp01-02/files_dns1/named.conf.local
diff --git a/sisr1/tp01-02/srv-dns1/named.conf.options b/sisr1/tp01-02/files_dns1/named.conf.options
similarity index 100%
rename from sisr1/tp01-02/srv-dns1/named.conf.options
rename to sisr1/tp01-02/files_dns1/named.conf.options
diff --git a/sisr1/tp01-02/srv-dns1/resolv.conf b/sisr1/tp01-02/files_dns1/resolv.conf
similarity index 100%
rename from sisr1/tp01-02/srv-dns1/resolv.conf
rename to sisr1/tp01-02/files_dns1/resolv.conf
diff --git a/sisr1/tp01-02/files_dns2/README.md b/sisr1/tp01-02/files_dns2/README.md
new file mode 100644
index 0000000..3c31502
--- /dev/null
+++ b/sisr1/tp01-02/files_dns2/README.md
@@ -0,0 +1 @@
+Files for the srv-dns2-ge Virtual Machine, from the FIRST AND SECOND TPs.
\ No newline at end of file
diff --git a/sisr1/tp01-02/srv-dns2/db.sio1lab.lan b/sisr1/tp01-02/files_dns2/db.sio1lab.lan
similarity index 100%
rename from sisr1/tp01-02/srv-dns2/db.sio1lab.lan
rename to sisr1/tp01-02/files_dns2/db.sio1lab.lan
diff --git a/sisr1/tp01-02/srv-dns2/db.sio1lab.lan.rev b/sisr1/tp01-02/files_dns2/db.sio1lab.lan.rev
similarity index 100%
rename from sisr1/tp01-02/srv-dns2/db.sio1lab.lan.rev
rename to sisr1/tp01-02/files_dns2/db.sio1lab.lan.rev
diff --git a/sisr1/tp01-02/srv-dns2/hosts b/sisr1/tp01-02/files_dns2/hosts
similarity index 100%
rename from sisr1/tp01-02/srv-dns2/hosts
rename to sisr1/tp01-02/files_dns2/hosts
diff --git a/sisr1/tp01-02/srv-dns2/interfaces b/sisr1/tp01-02/files_dns2/interfaces
similarity index 100%
rename from sisr1/tp01-02/srv-dns2/interfaces
rename to sisr1/tp01-02/files_dns2/interfaces
diff --git a/sisr1/tp01-02/srv-dns2/named.conf.local b/sisr1/tp01-02/files_dns2/named.conf.local
similarity index 100%
rename from sisr1/tp01-02/srv-dns2/named.conf.local
rename to sisr1/tp01-02/files_dns2/named.conf.local
diff --git a/sisr1/tp01-02/srv-dns2/named.conf.options b/sisr1/tp01-02/files_dns2/named.conf.options
similarity index 100%
rename from sisr1/tp01-02/srv-dns2/named.conf.options
rename to sisr1/tp01-02/files_dns2/named.conf.options
diff --git a/sisr1/tp01-02/srv-dns2/resolv.conf b/sisr1/tp01-02/files_dns2/resolv.conf
similarity index 100%
rename from sisr1/tp01-02/srv-dns2/resolv.conf
rename to sisr1/tp01-02/files_dns2/resolv.conf
diff --git a/sisr1/tp03/README.md b/sisr1/tp03/README.md
new file mode 100644
index 0000000..e295f33
--- /dev/null
+++ b/sisr1/tp03/README.md
@@ -0,0 +1 @@
+Each folder is called files_{Virtual Machine's name}.
\ No newline at end of file
diff --git a/sisr1/tp03/files_admin/README.md b/sisr1/tp03/files_admin/README.md
new file mode 100644
index 0000000..898e802
--- /dev/null
+++ b/sisr1/tp03/files_admin/README.md
@@ -0,0 +1 @@
+Files for the srv-admin-ge Virtual Machine.
\ No newline at end of file
diff --git a/sisr1/tp03/srv-admin-ge/hostname b/sisr1/tp03/files_admin/hostname
similarity index 100%
rename from sisr1/tp03/srv-admin-ge/hostname
rename to sisr1/tp03/files_admin/hostname
diff --git a/sisr1/tp03/srv-admin-ge/hosts b/sisr1/tp03/files_admin/hosts
similarity index 100%
rename from sisr1/tp03/srv-admin-ge/hosts
rename to sisr1/tp03/files_admin/hosts
diff --git a/sisr1/tp03/srv-admin-ge/interfaces b/sisr1/tp03/files_admin/interfaces
similarity index 100%
rename from sisr1/tp03/srv-admin-ge/interfaces
rename to sisr1/tp03/files_admin/interfaces
diff --git a/sisr1/tp03/srv-admin-ge/nat.sh b/sisr1/tp03/files_admin/nat.sh
similarity index 100%
rename from sisr1/tp03/srv-admin-ge/nat.sh
rename to sisr1/tp03/files_admin/nat.sh
diff --git a/sisr1/tp03/srv-admin-ge/resolv.conf b/sisr1/tp03/files_admin/resolv.conf
similarity index 100%
rename from sisr1/tp03/srv-admin-ge/resolv.conf
rename to sisr1/tp03/files_admin/resolv.conf
diff --git a/sisr1/tp03/files_dns2/README.md b/sisr1/tp03/files_dns2/README.md
new file mode 100644
index 0000000..2534959
--- /dev/null
+++ b/sisr1/tp03/files_dns2/README.md
@@ -0,0 +1 @@
+Files for the srv-dns2-ge Virtual Machine.
\ No newline at end of file
diff --git a/sisr1/tp03/srv-dns2-ge/db.monlabo.lan b/sisr1/tp03/files_dns2/db.monlabo.lan
similarity index 100%
rename from sisr1/tp03/srv-dns2-ge/db.monlabo.lan
rename to sisr1/tp03/files_dns2/db.monlabo.lan
diff --git a/sisr1/tp03/srv-dns2-ge/db.monlabo.lan.rev b/sisr1/tp03/files_dns2/db.monlabo.lan.rev
similarity index 100%
rename from sisr1/tp03/srv-dns2-ge/db.monlabo.lan.rev
rename to sisr1/tp03/files_dns2/db.monlabo.lan.rev
diff --git a/sisr1/tp03/srv-dns2-ge/hostname b/sisr1/tp03/files_dns2/hostname
similarity index 100%
rename from sisr1/tp03/srv-dns2-ge/hostname
rename to sisr1/tp03/files_dns2/hostname
diff --git a/sisr1/tp03/srv-dns2-ge/hosts b/sisr1/tp03/files_dns2/hosts
similarity index 100%
rename from sisr1/tp03/srv-dns2-ge/hosts
rename to sisr1/tp03/files_dns2/hosts
diff --git a/sisr1/tp03/srv-dns2-ge/named.conf b/sisr1/tp03/files_dns2/named.conf
similarity index 100%
rename from sisr1/tp03/srv-dns2-ge/named.conf
rename to sisr1/tp03/files_dns2/named.conf
diff --git a/sisr1/tp03/srv-dns2-ge/named.conf.local b/sisr1/tp03/files_dns2/named.conf.local
similarity index 100%
rename from sisr1/tp03/srv-dns2-ge/named.conf.local
rename to sisr1/tp03/files_dns2/named.conf.local
diff --git a/sisr1/tp03/srv-dns2-ge/named.conf.options b/sisr1/tp03/files_dns2/named.conf.options
similarity index 100%
rename from sisr1/tp03/srv-dns2-ge/named.conf.options
rename to sisr1/tp03/files_dns2/named.conf.options
diff --git a/sisr1/tp03/srv-dns2-ge/resolv.conf b/sisr1/tp03/files_dns2/resolv.conf
similarity index 100%
rename from sisr1/tp03/srv-dns2-ge/resolv.conf
rename to sisr1/tp03/files_dns2/resolv.conf
diff --git a/sisr1/tp03/files_service/README.md b/sisr1/tp03/files_service/README.md
new file mode 100644
index 0000000..c139bec
--- /dev/null
+++ b/sisr1/tp03/files_service/README.md
@@ -0,0 +1 @@
+Files for the srv-dns1-ge Virtual Machine.
\ No newline at end of file
diff --git a/sisr1/tp03/srv-service-ge/db.monlabo.lan b/sisr1/tp03/files_service/db.monlabo.lan
similarity index 100%
rename from sisr1/tp03/srv-service-ge/db.monlabo.lan
rename to sisr1/tp03/files_service/db.monlabo.lan
diff --git a/sisr1/tp03/srv-service-ge/db.monlabo.lan.rev b/sisr1/tp03/files_service/db.monlabo.lan.rev
similarity index 100%
rename from sisr1/tp03/srv-service-ge/db.monlabo.lan.rev
rename to sisr1/tp03/files_service/db.monlabo.lan.rev
diff --git a/sisr1/tp03/srv-service-ge/dhclient.conf b/sisr1/tp03/files_service/dhclient.conf
similarity index 100%
rename from sisr1/tp03/srv-service-ge/dhclient.conf
rename to sisr1/tp03/files_service/dhclient.conf
diff --git a/sisr1/tp03/srv-service-ge/dhcpd.conf b/sisr1/tp03/files_service/dhcpd.conf
similarity index 100%
rename from sisr1/tp03/srv-service-ge/dhcpd.conf
rename to sisr1/tp03/files_service/dhcpd.conf
diff --git a/sisr1/tp03/srv-service-ge/hostname b/sisr1/tp03/files_service/hostname
similarity index 100%
rename from sisr1/tp03/srv-service-ge/hostname
rename to sisr1/tp03/files_service/hostname
diff --git a/sisr1/tp03/srv-service-ge/hosts b/sisr1/tp03/files_service/hosts
similarity index 100%
rename from sisr1/tp03/srv-service-ge/hosts
rename to sisr1/tp03/files_service/hosts
diff --git a/sisr1/tp03/srv-service-ge/interfaces b/sisr1/tp03/files_service/interfaces
similarity index 100%
rename from sisr1/tp03/srv-service-ge/interfaces
rename to sisr1/tp03/files_service/interfaces
diff --git a/sisr1/tp03/srv-service-ge/isc-dhcp-server b/sisr1/tp03/files_service/isc-dhcp-server
similarity index 100%
rename from sisr1/tp03/srv-service-ge/isc-dhcp-server
rename to sisr1/tp03/files_service/isc-dhcp-server
diff --git a/sisr1/tp03/srv-service-ge/named.conf b/sisr1/tp03/files_service/named.conf
similarity index 100%
rename from sisr1/tp03/srv-service-ge/named.conf
rename to sisr1/tp03/files_service/named.conf
diff --git a/sisr1/tp03/srv-service-ge/named.conf.local b/sisr1/tp03/files_service/named.conf.local
similarity index 100%
rename from sisr1/tp03/srv-service-ge/named.conf.local
rename to sisr1/tp03/files_service/named.conf.local
diff --git a/sisr1/tp03/srv-service-ge/named.conf.options b/sisr1/tp03/files_service/named.conf.options
similarity index 100%
rename from sisr1/tp03/srv-service-ge/named.conf.options
rename to sisr1/tp03/files_service/named.conf.options
diff --git a/sisr1/tp04/README.md b/sisr1/tp04/README.md
new file mode 100644
index 0000000..1a533f2
--- /dev/null
+++ b/sisr1/tp04/README.md
@@ -0,0 +1 @@
+Folders bear an explicit name, unlike the predecessors.
\ No newline at end of file
diff --git a/sisr1/tp04/scripts_and_files/README.md b/sisr1/tp04/scripts_and_files/README.md
new file mode 100644
index 0000000..fa103d8
--- /dev/null
+++ b/sisr1/tp04/scripts_and_files/README.md
@@ -0,0 +1 @@
+This folder holds every single file and script done in the FOURTH TP.
\ No newline at end of file