Any life study books out there is just fine. You don't need an actual book that says it'll teach you since it won't. It all depends on you. If you wanna get into comic book art, grab some of your most favorite comics that you enjoy from the artists you admire and practice off their style. You're just using it as a stepping stone to practice, not saying for you to copy and post and say it's yours, that's a No No... But use that as a start. Then find what you like and don't worry about trying to impress anyone but yourself. That's an early pitfall a lot of upstarts get into. It's about how much you like it not someone else.
Ooh yes I understand!I never actually used any book within my drawing skills or developing them. I was always gifted on seeing how my favorite Manga artists style was and change it in the way I'll draw my characters so I actually been doing that transitioning over to graphic novels but thank you really