diff --git a/GUIDE.md b/GUIDE.md
index 3b1d2a0..670b75d 100644
--- a/GUIDE.md
+++ b/GUIDE.md
@@ -4,6 +4,28 @@
 
 #### Init
 
+```
+   duplicacy init - Initialize the current working directory as the repository to be backed up
+
+USAGE:
+   duplicacy init [command options] <snapshot id> <storage url>
+
+OPTIONS:
+   -encrypt, -e 			Encrypt the storage with a password
+   -chunk-size, -c 4M 			the average size of chunks
+   -max-chunk-size, -max 16M 		the maximum size of chunks (defaults to chunk-size * 4)
+   -min-chunk-size, -min 1M 		the minimum size of chunks (defaults to chunk-size / 4)
+   -compression-level, -l <level>	compression level (defaults to -1)
+```
+
+The *init* command first connects to the storage specified by the storage URL.  If the storage has been already been
+initailized before, it will download the storage configuration (stored in the file named *config*) and ignore the options provided in the command line.  Otherwise, it will create the configuration file from the options and upload the file.
+
+After that, it will prepare the the current working directory as the repositor.  Under the hood, it will create a directory
+named *.duplicacy* in the repository and put a file named *preferences* that stores encryption and storage options.
+
+
+
 #### Backup
 
 #### Restore