Add a note about pip dependency installation

Author: civerachb-cpr

README.md

@@ -2,4 +2,20 @@
 
 Tutorial source code for the TurtleBot 4.
 
-Tutorials are available in the [TurtleBot 4 User Manual](https://turtlebot.github.io/turtlebot4-user-manual/tutorials/).
+Tutorials are available in the [TurtleBot 4 User Manual](https://turtlebot.github.io/turtlebot4-user-manual/tutorials/).
+
+## Installing OpenAI Pip packages on Ubuntu 24.04
+
+On Ubuntu 24.04, `rosdep` cannot globally install Pip packages by default.  If you encounter errors installing dependencies, you may need to add
+```
+# Allow rosdep to install system-wide pip packages
+[install]
+break-system-packages = true
+```
+to `/etc/pip.conf` or
+```
+export PIP_BREAK_SYSTEM_PACKAGES=1
+```
+to `$HOME/.bashrc`.
+
+Alternatively, you can set up a `venv` and install Pip packages manually without using `rosdep`.