diff --git a/README.md b/README.md
index aca6c31..f0c9561 100644
--- a/README.md
+++ b/README.md
@@ -1,48 +1,77 @@
-# liblog
+# liblog: Virtual stream for logging
 
-Une lib de log simple d'utilisation nécéssitant gint.
-L'utilisation est archi simple ! On envoie une chaine de caractères et c'est tout !
+This library has been written to provide a sample stream, like a simplified printf to make on calc debug easier. It uses gint, and it is compatible with fxcg50 & fx9860g models.
+It currenlty supports:
+- Virtual stream with custom priorities for messages
+- Dynamic weight in ram (maximum 1Ko for fx9860g and maximum 4Ko for fxcg50)
+- Basic display functions for the stream
+- Function for exceptions
 
-On peut si besoin afficher ce log en cas d'erreur, ou simplement pour consulter l'état d'éxécution du programme à un moment donné.
+## Install
+First, clone the project and then `cd` into the library directory. Then, you will have to configure and then install.
+### fx9860g models
+``` bash
+./configure --fx9860g
+make && make install
+```
+### fxcg50 models
+``` bash
+./configure --fxcg50
+make && make install
+```
+Now, you have installed the library in your compiler. You can now use it in projects.
 
-## Installation
+*Note: the library can be installed for both platforms at the same time, installing one will not overwrite the other build.*
 
-Il vous suffit de vous placer dans ce dossier et taper dans un terminal
-``` sh
-make
-make install || sudo make install
+## Tutorial
+We'll see how tu use the library in a sample project. :)
+### Configure project
+You have to link the library in the project so you can use it in compilation ;)
+You just have to add one word in the `project.cfg` file:
+``` make
+# Libraries. Add one -l option for each library you are using, and also
+# suitable -L options if you have library files in custom folders. To use
+# fxlib, add libfx.a to the project directory and use "-L . -lfx".
+LIBS_FX :=
+LIBS_CG :=
+```
+Just add the word `-llog-fx` and `-llog-cg` to the lines. Once it is modified it should be like this:
+``` make
+# Libraries. Add one -l option for each library you are using, and also
+# suitable -L options if you have library files in custom folders. To use
+# fxlib, add libfx.a to the project directory and use "-L . -lfx".
+LIBS_FX := -llog-fx
+LIBS_CG := -llog-cg
 ```
 
-## Utilisation
-
-### Configurer le projet
-
-Dans le fichier project.cfg du projet, modifier la ligne suivante
-``` sh
-LDFLAGS =
-```
-Il suffit d'ajouter 2 nouveaux flags, comme ça
-``` sh
-LDFLAGS = -llog -lgint-fx
-```
-
-### Dans le code source
-
-D'abord, il faut inclure le header de liblog
+Before using it, you have to write at the beginning of your source file:
 ``` C
 #include <liblog.h>
 ```
+To initialize or reset the log, use `log_clear()` function, for example in main.c.
 
-#### Écrire dans le log
+### Write text
+You can easily send text to the stream with `ll_send()`. However, you can set a priority to this message. The different priority levels are:
+- LEVEL_INFO (if don't want to use the priorty levels, use it)
+- LEVEL_WARNING
+- LEVEL_CRITICAL
+- LEVEL_FATAL
+The print function is easy to use:
 ``` C
-ll_log("Votre message de débug");
+ll_send(priority, "Your text");
 ```
-
-#### Afficher le log
-
-Afficher le log peut être utile pour le débug, notamment en cas d'exception.
-Il suffira de taper la commande suivante :
+For example, I want to send a warning because a file doesn't exist, I just have to write:
 ``` C
-ll_display();
-// getkey(); si vous voulez mettre le programme en pause pour lire
+ll_send(LEVEL_WARNING, "Can't read file %s (ErrCode=%d)", filename, code);
 ```
+You can note that it uses the same syntax as printf, because it uses `sprintf()` from gint. So you can enter all the types or arguments that gint supports. :p
+
+### Change priority
+You can also set the mimimal priorty level that the log accepts with `void ll_set_level(log_level_t);`. You can suspend it with `ll_set_level(LEVEL_QUIET);`, and at any moment change the priority to reaccept new messages. You can also get the current priorty with `ll_get_level(void)`.
+*If you don't use priority, the only level you use is LEVEL_INFO, so to restart it, use ll_set_level(LEVEL_INFO); ;)*
+
+### Display log
+Just call `ll_display()` to draw the last lines. It is a "one frame" function, there is no input management. To scroll, just use `ll_pause();` which allows to use the arrows to scroll. To get out this function, use the `[EXIT]` key.
+
+### Enable panic function
+You just have to run once `ll_set_panic();`. After this, if there is any "System Error", the log will be displayed and you could track the bug.