Bio 30 study resources

Hi i am currently doing biology 30 this semester and we are currently doing the cell cycle and hereditary and this stuff i pretty hard and my teacher aint that good neither are the resources but i try my best the textbook is pretty good i do use ai to summarize it specifically chatgpt and gemini but i need more than that for chem 30 there was some really good resources i used but for bio i cant seem to find any can anyone help me out and lend me some good study material or some good youtube channels or study hacks please it would be greatly appreciated