advice for anatomy studies of legs and feet ?

[darktiste]

.Since most of the time there covered by pant and shoe i don't see the point in spending alot of attention on them.

Because the way you draw the pants and shoes depends on what is underneath them.

Of course it important but do you think you need to learn every little bone of the foot to do a good shoe? I don't think so.It more important to learn the range of motion and to learn the simplification but of course it alway depend of what you aim at doing.I would just generally think that leg can be seen as a lesser important feature.For example it much more important to draw face in my opinion than to draw a good foot or a good hand compare to a good foot.