Mutants & Masterminds Basic Hero's Handbook - Rules of Play says:

Every hero needs an origin story and this can be yours! Written with new gamers in mind, the Basic Hero’s Handbook streamlines and clarifies the flexible, robust third edition rules of Mutants & Masterminds. With simplified character creation and a selection of ready-made adventures, the Mutants & Masterminds Basic Hero’s Handbook lets players jump right into the action. The book is fully compatible with the Deluxe Hero’s Handbook and the entire library of third edition Mutants & Masterminds supplements, instantly expanding your character options and adventure potential. Whether you’re just getting started, or want an extra player-friendly reference at the table, the Mutants & Masterminds Basic Hero’s Handbook is the choice for your world-saving needs!