Hey Chris,
Lightly grip the top and bottom of the dial, after pulling the crown out, like one does with adjusting the time/hands... Then gentlely rock the whole enchilada back and forth... whilst holding onto the the caseback, with the opposing thumb and index finger... (It may come right out? Or take several "to and froe" rocks?) To my knowledge, on the "fancy shape " Bullys after the early 30s (or mprimarily the latter 20s, with the hinged case and bezel "clamshell" designs...) the winding stem may perhaps be held by a round, square, tonneau or rectanguar spacer (thin metal band that surrounds the movement, in between the gap where it slides into the case back...) but I doubt that it's any more complicated, than a few seconds (or perhaps minutes, the first one?) to get that puppy outta there!?
Often it's rather held in there by a slightly ascew spacer ring, slid 1- 3 degrees, over the winding stem!
Dial removal is moch trickier, and also requires a "hands puller" tool, and others... Best to leave that to the watchmaker... until you get properly schooled/equipt. Crystals, however, are EASY to remove, 95% of the time... as they are generally not glued, UV, model, or other plastic cemented... and occasionally glass is epoxied... Otherwise, the best way to SAVE MONEY is to source crystals, and get some glue, using acrylics, for weekly +/- wear timepieces... (Or glass, if it's seldom worn, and expensive...)
ALSO SEE:http://www.mybulova.com/node/691 for a LOT MORE info, on watch crystals!
Best :-) Scott