This is a compiled list of resources that I have used in making my own Bitsy games. Sub-menus break up between “Tutorials” and “Tools”.
I definitely recommend looking at the Youtube videos, which cover a lot of the functionality of Bitsy. Claire Morwood’s tutorial is a good place to start with your first couple of rooms.
Finally, I have found the discord server to be super-helpful. Bitsy has such a great community.