It's Clip Studio Paint for drawing and sometimes Photoshop for post-effects. Sai is also convenient and free, I used it at first.
Hmmm I didn't quite learn how to draw hands purposely X) I mostly use references and look how other artists draw a certain thing if I'm not sure how to do it.
Sinix Design and Proko have cool Youtube lessons on anatomy, just sayin'
ctrlpaint.com has an awesome library of vids too, I will advertise it anywhere lol
And did you fave like my entire gallery??
I'm really flattered! Glad you like my works!