The Kane Chronicles: Book 1: The Red Pyramid

                  The Red Pyramid is a recording by two children that the author of Percy Jackson, by Rick Riordan,  found somewhere and wrote a book about.  In the book, the Kane children, Sadie and Carter, discover something that will change their world: they are magicians.  A magician is a magical human-like being from Egyptian mythology that can cast magic.  Each one has its own area of expertise like fire, water, combat, and even cheese.  At least I think that's the last one.  It is a very funny book with surprises along the road at every turn.

                  This book takes place in the same universe as Percy Jackson, but with different gods.  It hints several times toward the Percy Jackson series.  But if you thought that Rick Riordan was sticking with Greek, you were wrong.  I think that the level of comedy rivals his other books.  There is at least one other book in the series.  The second book is called The Throne of Fire.