I can’t remember how or when I came across this tutorial on drawing hands by illustrator Joumana Medlej, but it’s been an invaluable resource. It neatly summarizes everything I’ve ever learned from anatomy books and life drawing lessons on the construction and depiction of a palm & five digits. The style is clean, concise and technical, and the examples explore the hand’s full range of motion and various viewing angles.
Bookmark it. You’ll find that it’s handy.