(STAR SIGHTING/BOOK SIGNING) You have every right to scoff at the idea of Dirty Blonde: The Diaries of Courtney Love, but here's the thing: It's the most engaging and intoxicating work that Love has produced since Live Through This. Compiling life-spanning journal entries, rough drafts of classic lyrics, and an array of impressive lists (things to do, guys worth fucking), Dirty Blonde offers a fascinating glimpse into the making and maintenance of one of the 20th century's most provocative and valuable art stars. (University Book Store, 4326 University Way NE, 634-3400. 5 pm, free.)