Pocket podiatrics is good, but it's pretty much basic stuff you should know by 3rd year.
PI manual is excellent; probably the best resource if I had to pick one. Calif guide to trauma classifications is useful. Presby is good but getting a bit dated. Crozer Keystone is good if you like Q&A format. Prism is one I have but really haven't read much but a lot of students seem to like. Don't discount McGlamry... it's getting dated, but it's still the core surgery teaching text, anatomy doesn't change, and you can bet your bottom dollar that nearly all your attendings have read it. Chang is very solid also. A lot of F&A ortho texts are also also good but probably more available/affordable when you're in residency.
Be punctual, be interested, and be friendly out on rotations. In terms of pure academics, though, what will really separate the men from the boys during rotations and at interviews is knowledge of current literature, standards of care, etc. Read J Foot Ankle Surg, read Foot Ankle Intl, etc. As a student, you should regularly browse those journals and run general pubmed searches for F&A surg topics. There is a lot of great literature and a lot that's not so great, but most that makes those journals is pretty solid. You will also learn how to search efficiently, pick out good articles based on abstract, and begin to surmise who's who among DPM authors pretty fast.
How well you can read xr, CT, etc will also be tested on rotations/interviews, and that's just knowing anatomy and repitions. Go through your surgery, radiology, etc class powerpoints or just save a lot of pics from PDF journal articles, etc and make your own slideshows to go over with classmates.
I have the blue cover Foot and Ankle Secrets, and it sure is pretty dated. That and Kushner's "Pearls for NBPME" are still decent for nbpme pt2 and 3 I guess, but you can find better stuff for interviews. Hershey is one that I've never actually opened... I think mine is pretty old, and I have other good textbooks I have yet to finish as well as the ever-growing current literature.