>>7639951
>I have a decent level in anatomy, perspective and gesture
>don't know from where to start
Just do what you did to learn the former? I'm not gonna ask you to pyw but IMHO it doesn't sound like you have truly internalized as much as you claim, maybe it's just me but I don't think you'd need to even ask how to proceed. Basic googling of those subjects should lead you to enough resources. As for the "best", that depends entirely on what kind of learner you are, it's not something anyone here can answer.
Check the artbook thread, and on the topic of comic art I'd say check out Framed Ink.