Need help

I finished boards and jee recently and now i want to start my kcet preparation. In boards I'll be getting overall 85-89% PCM. But now i need help as how should i study for kcet. I'm confident in my 2nd puc topics. is there any advice i can get like any YouTuber to study from or any specific books to buy and study from in these last 20ish days?? I got an old mtg book from my friend 2024 edition. should i use that or get a new one? and what about board question banks, will it be helpful or not.