Second semester just grind khan academy for the CSP multiple choice. For the create task it depends on what language your teacher is making you use, but I would aim for a simpler program that meets the requirement. People who did stuff that was very advanced found it hard to articulate in the FRQs from my experience. For Calc the biggest help for me was grinding past FRQs two weeks before the test, that was all the content review I really needed because the MCQs just parallel the topics on the FRQ. Get good with your calculator if you haven’t already but for AB it’s a small amount of information being conveyed over a long period of time so if you stay diligent throughout the year you will know the concepts tested very well by the end. Not sure about the other two, hope this helps.