There are MANY ways to QAYG. Several members have posted tutorials on how to do it, their way. I have posted mine here:
Quilt As You Go (QAYG) Tutorial
and then my way to do QAYG with wide sashings (filled with batting):
QAYG With Wide Sashing-- How I Do It
If you are looking for a book, I recommend Marti Michell's book,
Machine Quilting In Sections. She's the best.