This is a basic tutorial for using BSim in Ghidra. The main thing it will go over is how to compare matches of functions across binaries and how to navigate the BSim interface.
Your Ghidra version MUST be on 11 or higher to use BSim features.
To enable BSim, go into CodeBrowser. Then, click the File tab, then click the Configure button. Then, click the checkbox on the BSim tool. This enables the BSim tab in CodeBrowser.