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+++ b/README.md
@@ -1,3 +1,39 @@
-# mysql-backup
+# MySQL Backup
 
-A basic script to backup mysql instance
+A basic script to backup mysql instance
+
+## How it work
+
+MySQL backup list your databases.
+On each database, MySQL Backup lists tables, dumps schemas and data on two separate files on each tables.
+
+In `databases` folder, you will find the structure for each database and each table.
+In `extras` folder, you will find the routine, trigger and event of your database.
+In `schemas` folder, you will find each table structure per file.
+In `datas` folder, you will find each table data per file.
+
+## How use it ?
+
+Create a backup user with these grants : `SELECT, RELOAD, LOCK TABLES, REPLICATION CLIENT, SHOW VIEW, EVENT, TRIGGER`
+
+Download `mysqlbackup.sh`.
+Execute script with good parameters
+Take a coffee
+
+```
+su - mysqlbackup
+cd ~
+wget https://git.drycat.fr/Dryusdan/mysql-backup/raw/branch/master/mysqlbackup.sh
+chmod +x mysqlbackup.sh
+./mysqlbackup.sh /empty/folder/for/mysqldump 7 backup S3c4ET 127.0.0.1
+```
+
+
+| Parameters | Explain |
+| -------- | -------- | 
+| Folder    | Folder where dumps were stored. This folder must be empty |
+| Retention | Time on the day before dropping a dump | 
+| Username | Username of you're mysql's backup user |
+| Password | Password of you're mysql's backup user |
+| Host  | You're MySQL Host. Default is 127.0.0.1 |
+| Port  | You're MySQL Port. Default is 3306 |