diff --git a/README.md b/README.md
index 71e7245..f6ac9e0 100644
--- a/README.md
+++ b/README.md
@@ -8,4 +8,14 @@
 
 - `docker build . -t gateway`
 - `docker run -p 22:22 gateway`
-- `ssh test@localhost "{\"identifier\": \"project_env\", \"token\": \"token\", \"command\": \"/bin/bash\", \"envs\": {}, \"args\": []}"`
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+- `ssh test@localhost "{\"identifier\": \"project_env\", \"token\": \"token\", \"command\": \"/bin/bash\", \"envs\": {}, \"args\": []}"`
+
+## BOOK
+
+```shell
+cargo install mdbook
+```
+
+```shell
+cd book/ && ~/.cargo/bin/mdbook watch
+```
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