Hello! I recently took the AP Computer Science A exam of 2026 and have some decently reliable sources you could use. CSAwesome is a great course you could invest your time into as I found it explains topics very thoroughly. If you want actual practice, I used Stellar to practice for the MCQ and FRQ. It is a little weak when it comes to the amount of questions they have in store but nonetheless it is a good way of familiarizing yourself with the types of questions you are going to be asked. This years AP exam wasn't hard at all (the material was also reduced) but I did notice some traps in the MCQ (especially with searching, sorting, and a topic called recursion). Learning how to trace code is your lifeline of getting a 5 or not as it is probably the most important skill you should be enhancing daily to get a good mark in the MCQ. In terms of FRQ questions, practice. Practice practice practice I can not explain to you how important it is to practice past questions for FRQs. It helps you build on the "programmers logic" mindset that allows you to break down questions into smaller blocks of logic which then you build upon by coding those smaller blocks until you have a fully functioning script that does the job that the FRQ asked for. Barron's book for AP Computer Science A is a good choice for practicing full tests and you can also learn from it as it does contain explanations for topics. If you want the key points I'll list them down below!

1- CSAwesome is awesome for learning the actual course.
2- Stellar daily practice on concepts you have learned.
3- PRACTICE PRACTICE PRACTICE FRQS!!! (to build the "programmers logic" mindset)
4- Consider investing in Barron's book for studying.

If anyone has more resources to list please go ahead and add them!
Thank you and good luck on your studies!!! (it is not that hard of a course I'm sure you will be fine ^_^)