Great Scott has a fantastic channel and does a lot to explain the theory in a practical way. Check out his electronics basics videos first if you need a refresh

Great Scott has a fantastic channel and does a lot to explain the theory in a practical way. Check out his electronics basics videos first if you need a refresher but he does a lot of designs from scratch that are very insightful. https://www.youtube.com/@greatscottlab https://www.youtube.com/@greatscottlab