I like these books-
http://www.amazon.com/Schnibbles-Tim.../dp/1564779866
Schnibbles Times Two: Quilts from 5" or 10" Squares (That Patchwork Place)
and
http://www.amazon.com/Another-Bite-S...d_bxgy_b_img_b
Another Bite of Schnibbles: 24 Quilts from 5" or 10" Squares (That Patchwork Place)
I would sort the squares by theme or color before starting a project.