diff --git a/README.md b/README.md
index c3bad72..ebb5766 100644
--- a/README.md
+++ b/README.md
@@ -1,11 +1,19 @@
-## wsoffcli [![Build Status](https://travis-ci.com/Akenaide/wsoffcli.svg?branch=master)](https://travis-ci.com/Akenaide/wsoffcli)
+## wsoffcli
 
 Collect data from https://ws-tcg.com/
 
 ### Synopsis
 
 Collect data from https://ws-tcg.com/.
+
 Create a json file for each card with most information.
+
+Example:
+'wsoffcli fetch -n IMC' will fetch all cards with a code starting with 'IMC'
+
+If you want more than one use '##' as seperator like 'wsoffcli fetch -n BD##IM'
+
+'--serie' use a hidden number in the official site, this number is increment for each new set (e.g Kadokawa is number 259, Goblin 260 ...)
 	 
 
 ### Options
@@ -19,7 +27,7 @@ Create a json file for each card with most information.
 
 ### SEE ALSO
 
-* [wsoffcli fetch](doc/wsoffcli_fetch.md)	 - Fetch
+* [wsoffcli fetch](doc/wsoffcli_fetch.md)	 - Fetch cards
 * [wsoffcli gendoc](doc/wsoffcli_gendoc.md)	 - Generate doc with Cobra
 
 ###### Auto generated by spf13/cobra on 10-May-2019
diff --git a/cmd/fetch.go b/cmd/fetch.go
index 62ddd41..b191d2c 100644
--- a/cmd/fetch.go
+++ b/cmd/fetch.go
@@ -34,8 +34,10 @@ import (
 // fetchCmd represents the fetch command
 var fetchCmd = &cobra.Command{
 	Use:   "fetch",
-	Short: "Fetch",
-	Long:  `Fetch`,
+	Short: "Fetch cards",
+    Long: `Fetch cards
+
+Use global switches to specify the set, by default it will fetch all sets.`,
 	Run: func(cmd *cobra.Command, args []string) {
 		fmt.Println("fetch called")
 		jar, err := cookiejar.New(&cookiejar.Options{PublicSuffixList: publicsuffix.List})
diff --git a/cmd/root.go b/cmd/root.go
index 8e441d2..744f71c 100644
--- a/cmd/root.go
+++ b/cmd/root.go
@@ -60,7 +60,15 @@ var rootCmd = &cobra.Command{
 	Use:   "wsoffcli",
 	Short: "Collect data from https://ws-tcg.com/",
 	Long: `Collect data from https://ws-tcg.com/.
+
 Create a json file for each card with most information.
+
+Example:
+'wsoffcli fetch -n IMC' will fetch all cards with a code starting with 'IMC'
+
+If you want more than one use '##' as seperator like 'wsoffcli fetch -n BD##IM'
+
+'--serie' use a hidden number in the official site, this number is increment for each new set (e.g Kadokawa is number 259, Goblin 260 ...)
 	 `,
 	// Uncomment the following line if your bare application
 	// has an action associated with it:
diff --git a/doc/wsoffcli_fetch.md b/doc/wsoffcli_fetch.md
index 8da9209..5801a0a 100644
--- a/doc/wsoffcli_fetch.md
+++ b/doc/wsoffcli_fetch.md
@@ -1,10 +1,12 @@
 ## wsoffcli fetch
 
-Fetch
+Fetch cards
 
 ### Synopsis
 
-Fetch
+Fetch cards
+
+Use global switches to specify the set, by default it will fetch all sets.
 
 ```
 wsoffcli fetch [flags]