TidBITS Publishing today announced two new ebooks designed to assist iPhone users. The 93-page “Macworld iPhone Superguide” (US$12.95), written by the technology experts at Macworld, examines every facet of the iPhone, from setup and activation all the way to choosing the best accessories. The writers look in depth at the iPhone’s email and text message capabilities, using Safari and other iPhone applications, converting and watching video, and syncing photos.