Oh don't worry about it, I'm still learning, myself. I'm admittedly awful at... Most of everything, really! XD

As to advice, I think a great way to improve is to simply copy other drawings or work from photo reference. It requires less patience than finding a book about muscles and copying all the muscles in a human body.

I don't mean copying as in tracing, though. Just reference musculature and posture etc. from photo/art sources. It's a fun way to improve, and it helps you draw even when you're not motivated, since half the groundwork is already done for you by someone else.

Anyway, I think it's a great way for beginners to learn. I'll personally advice not to spend too much time on lineart either. I noticed you mentioned entertainment design on your profile, so unless you're planning to go down the anime road, don't focus too much on lines. It limits you a lot; if you make a mistake in the lines, they can easily prevent you from seeing what's wrong with your drawing.

Wow, sorry for the essay. Anyway, that's all from me, I'm not exactly good at this orz
deviantART muro drawing

Thanks for all the great art! C:

Ahh? Yes, yes I am! Looking forward to seeing art from you! XD