If anatomy's been one of those areas you've known you need to work on but it's just too much of a pain to work through all those tedious textbooks, I would recommend checking out this resource: [link]

I haven't gone all the way through it so I can't vouch for it in its entirety, but it looks like a good, user-friendly way to take bite-sized chunks of learning anatomy! Now, knowing the bones and muscles isn't all that's required to draw great figures, but knowing what pieces exist and being able to name them helps you remember that they're there and you can be more specific when you draw and study.

If you enjoy this and want to dig in to anatomy and figure construction even deeper, I'd recommend checking out this book list: [link]