CTRL+T (CMD+T for mac) to "tidy" the code . This is probably the most handy one.
File→ Preference, lots of options
- Mostly changing text size and line numbers.
Sometime when your program scale up and not run, tick the "Increase maximum memory to:" change it to larger number
- A great learning source, come bundled with Processing IDE. File→ Examples...
- Sketch→ Import Library → Add Library
- Processing can have extended function like: GUI, audio video player, physics engine,etc. Make good use of them
Use google a lot, if you encounter some problem, it is very likely that someone else has already encountered it.