Guide to serve book locally in English and Chinese

Readme.md

@@ -26,9 +26,24 @@ This book was designed for easily diving into and get skilled with Rust, and it'
 ## Running locally
 
 We use [mdbook](https://rust-lang.github.io/mdBook/) building our exercises. You can run locally with below steps:
+
+- Clone the repo
+```shell
+$ git clone git@github.com:sunface/rust-by-practice.git
+```
+- Install mdbook using Cargo
 ```shell
 $ cargo install mdbook
-$ cd rust-by-practice && mdbook serve 
+```
+
+- For Book in English
+```shell
+$ cd rust-by-practice && mdbook serve en/
+```
+
+- For Book in Chinese
+```shell
+$ cd rust-by-practice && mdbook serve zh-CN/
 ```
 
 ## Features