Have a Hot Time, Hades! (Myth-O-Mania #1) by Kate McMullan
Think you know the real story behind the Greek myths? Think again. Most people only know what Zeus wants them to. But the truth is, Zeus is a total myth-o-maniac. Hades, King of the Underworld, is here to set the record straight on how he ended up as Ruler of the Underworld and Zeus became King of the Gods.