This is a worthwhile introduction to the art of figure drawing that, while it won’t tell the more experienced artist anything they don’t already know, is an excellent and really quite thorough primer that gives valuable advice to the novice.
Viv Foster provides a useful grounding in basic anatomy that won’t make you feel as though you’ve bought a medical textbook and then explains, with copious illustrations, the shapes and structure of male and female figures. All of this takes up the first half of the book before we get to more detailed poses, which are dealt with in some detail, using step by step demonstrations where necessary. The overall style is quite loose and may not suit those who want a more detailed likeness, however, but it should also provide a solid grounding for anyone new to the subject. If this is something that interests you, but you have little experience, you’d do a lot worse than start here. You’ll almost certainly want more advanced and more detailed books later, but this is an excellent first step.