My very first sweater was the pattern called "A Tempting Turtleneck" from the book called "Yarn Girl's Guide to Simple Knits". All the sweaters in this book are very simple to knit.
I also bought a book called "The Learn to Knit a Sweater Book". I've seen it at JoAnn Fabrics and other craft-y type stores. It has step-by-step instructions for knitting a couple different types of sweater patterns. VERY easy!!!