Beloved bibliophile paradise Rediscovered Books is turning 11 years old, and has planned a birthday celebration in true bookworm style. Join the staff at the shop Saturday, Sept. 9, to welcome a Guru Donuts "bookship" (docking at 1 p.m.) and participate in a birthday book contest that will challenge even the most avid readers. Rediscovered will set up 11 displays of 11 books each, and the books in every display will have what the shop calls "a common thread." All you need to do is guess what each set has in common, and the entrant with the most correct answers will go home with 11 free books and other Rediscovered goodies. The contest runs for one day only, so if you want in, stop by the shop, grab a donut, make your best guesses and browse the shelves for a new read.