diff --git a/README.md b/README.md
index c9b11d87..4fab0106 100644
--- a/README.md
+++ b/README.md
@@ -13,7 +13,7 @@
 
 pkpy is a lightweight(~8000 LOC) Python interpreter for game engine/apps, built on C++17 with STL.
 
-It is extremely easy to embed. Including a compiler, optimizer and bytecode virtual machine. All of them are available in a single header file `pocketpy.h`, without external dependencies.
+It is extremely easy to embed. Including a compiler and a bytecode virtual machine. All of them are available in a single header file `pocketpy.h`, without external dependencies.
 
 Please see https://pocketpy.dev for details or try [Live Demo](https://pocketpy.dev/static/web/).
 
diff --git a/docs/developer_guide.md b/docs/developer_guide.md
new file mode 100644
index 00000000..1cedc783
--- /dev/null
+++ b/docs/developer_guide.md
@@ -0,0 +1,42 @@
+---
+icon: book
+order: 2
+label: Developer guide
+---
+
+There are some scripts to help you develop this project.
+
+## Build scripts
+
+`build.py` is the main script to build the project.
+```bash
+# equivalent to `python build.py linux`
+python build.py
+
+# build for linux executable or `.so` library
+python build.py linux [-lib]
+
+# build for windows executable or `.dll` library
+python build.py windows [-lib]
+
+# build for web (wasm)
+python build.py web
+```
+
+## Test scripts
+
+```bash
+# run unit tests
+python scripts/run_tests.py
+
+# run benchmarks
+python scripts/run_tests.py benchmarks/
+```
+
+## Distribution scripts
+
+```bash
+python amalgamate.py
+```
+
+It will generate a single `pocketpy.h` and `main.cpp` in `amalgamate/` directory.
\ No newline at end of file
diff --git a/docs/index.md b/docs/index.md
index a6955be2..4edd2587 100644
--- a/docs/index.md
+++ b/docs/index.md
@@ -7,7 +7,7 @@ label: Welcome
 
 pkpy is a lightweight(~8000 LOC) Python interpreter for game engine/apps.
 
-It is extremely easy to embed. Including a compiler, optimizer and bytecode virtual machine. All of them are available in a single header file `pocketpy.h`, without external dependencies.
+It is extremely easy to embed. Including a compiler and a bytecode virtual machine. All of them are available in a single header file `pocketpy.h`, without external dependencies.
 
 ## What it looks like