Bob “Dr. Mac” LeVitus is currently working on his new book, Dr. Mac: The OS X Files, a reference for mastering Mac OS X. Scheduled to be published early next year, LeVitus is currently soliciting Mac OS X tips and tricks from users. Readers who submit tips that are selected for publishing will be mentioned alongside the tip in the book and will also receive an autographed copy of the finished work. Tips must be received by November 26 to be eligible.