I've received a couple of PM's about my knowledge of that area, and I'll share with everyone my major resource (initially) for exploring
This book:
Every major trail we know is in that book, and, if you're like us, you'll find interesting offshoots on every single one. Don't be like us (and spend the night in the wilderness because you took the wrong trail back and driving on cliffside in the dark is scarrrry) go to the Bridgeport (recommended) or Mammoth Ranger stations and get good quality USFS maps to back it up. The book is very linear and puts you on specific paths, if you venture off them you should be prepared!!