Start with a Blank Slate-quilt design anyone can do. This 148 page step by step tutorial about quilt design and execution should make quilt design easy for anyone to do. An easy to understand design concept is layed out in easy to follow steps.
This book has a CD with over 40 patterns from small ones through middle size to large and more complex patterns along with many design layout ideas. There are 241 PDF files on that CD, as all patterns and design layouts on the CD are presented in few different sizes.