Git hub is a great tool for social collaboration. The Fusion 360 team has created a resources page that links to a hand-full of Autodesk and user authored scripts.
Github is great as it allows anyone to fork (copy) a codebase and modify it. Modification can live as a new derivative work or you can ask the original code owner to pull your changes (pull request) and incorporate them into the source codebase.
There is a lot more to Github but having a community go around scripting in Fusion 360 is nothing but good news.
There are several pretty cool scripts that I can see you using often. Some favorites:
- Sketch checker highlights open line endpoints. Helps find the gap in a profile that is preventing a closed region from being found.
- Paramater IO Allows you to write our parameters to a CSV file, edit them in a spreadsheet tool of your choice and then read them back in to edit the model.
- Change Paramaters Makes editing user parameters easy. I plan of forking this and changing it to be used to edit favorites.