bump
Nikon is probably the most versatile 35mm, around, and will accept every accessory imaginable from motor drives to viewfinders to numerous lenses. Nikon was smart enough to not obsolete their previous cameras when they brought out a newer model, so there is a long time span - say 15 or more years - where many accessories, and all lenses will work.
Newer Nikons are even better, but probably pricy. If its just a "get acquainted" course that he may or may not continue with, just about any 35mm slr would probably do fine. Shoot, I've seen some pretty good photography with a Russian $29.95 slr!