Met with my life drawing group yesterday. I think life drawing for an artist is like going to the gym for an athlete. Got to keep those drawing skills toned up and keep trying to improve. The human form is the most demanding thing to draw. If there's the slightest thing wrong, people notice.
I've been through a lot of drawing books and they often have somewhat different approaches to figure drawing. You just have to find one that works for you. Here's what I do: