diff --git a/README.md b/README.md
index 5bc0d85..4342926 100644
--- a/README.md
+++ b/README.md
@@ -19,6 +19,13 @@ python3 build.py build
 ./bin/sls
 ```
 
+Python run module
+```bash
+cd SLS_Python
+python3 -m sls_py
+python3 -m sls_py.calc
+```
+
 Python Setup
 ```bash
 cd SLS_Python
@@ -28,8 +35,8 @@ pip install build wheel "setuptools>=61.0"
 pip install -e sls_build_backend
 ```
 
-Python
-```
+Python build module
+```bash
 cd SLS_Python
 source .venv/bin/activate
 python3 -m build --no-isolation
@@ -54,6 +61,13 @@ python build.py build
 .\bin\sls.exe
 ```
 
+Python run module
+```bat
+cd SLS_Python
+python -m sls_py
+python -m sls_py.calc
+```
+
 Python Setup
 ```bat
 cd SLS_Python
@@ -63,7 +77,7 @@ pip install build wheel "setuptools>=61.0"
 pip install -e sls_build_backend
 ```
 
-Python
+Python build module
 ```bat
 cd SLS_Python
 .venv\Scripts\activate.bat
@@ -84,8 +98,8 @@ cargo build
 
 Reference Linux build instructions.
 
-For C there is the `python build.py macos` command, but it is untested as I
-didn't test it on a Mac. I also don't know if `python build.py build` would also
+For C there is the `python3 build.py macos` command, but it is untested as I
+didn't test it on a Mac. I also don't know if `python3 build.py build` would also
 work on a Mac.
 
 Python and Rust should just be the same or similar to Linux.
@@ -105,7 +119,7 @@ sudo apt install gcc-arm-none-eabi
 
 ```shell
 cd SLS_C
-python build.py rp2040
+python3 build.py rp2040
 ```
 
 Flash Raspberry Pi Pico: