advice for anatomy studies of legs and feet ?

[JosephCow]

Of course it important but do you think you need to learn every little bone of the foot to do a good shoe?

No, you probably don't need to know that. But I wouldn't say the legs are less important to study than torso or head just because people wear pants. Why study the torso? people just wear shirts anyway! Why study the head? it's covered by hair anyway! I'm just saying it's not great reasoning.