FAIRBANKS, Alaska — Alaska Gov. Sarah Palin steps down Sunday giving few clues about her political future, which has been clouded by ethics probes, mounting legal bills and dwindling popularity. A few things are known: She is scheduled to speak Aug. 8 at the Ronald Reagan Presidential Library in California, and has said she plans to write a book, campaign for political candidates from coast to coast and build a right-of-center coalition. She also plans to continue speaking her mind on the social networking site Twitter. "Wrapped up Anch Gov's Picnic, awesome," she wrote in a message posted Saturday.