Illustration: Jane Rosenberg/REUTERS For weekly updates on all the most pivotal and dramatic moments from Diddy’s trial, sign up for our newsletter: Court Appearances: United States v. Diddy , and check out the rest of our trial coverage here . Sean “Diddy” Combs appears to be working on himself when he’s not sitting through testimony in his Manhattan federal court sex-trafficking trial — with self-help books. Diddy was spotted with a book with an orange cover in court on June 10; a source told