[help] skill improvements

Hey everyone!

Just wanted to find out everyone's go to books ,videos and learning resources , I sculpt mainly fantasy and animals ( mostly reptilian or fungi ). I'm realling wanting to push myself and improve my craft , be more intentional and better capture my ideas or things I see. I mostly use wax clay as I prefer the texture, it's reusable and I use it for master molds.

I haven't found much online resources that are comprehensive or zero in on the improvement overall and not sculpting that one particular thing they are doing.