click on the "search" option at the top of the page. search on "quilting in sections". lots of information, links, comments and suggestions already here.
you can also do an internet search on the same term. you'll find bazillions of links.
this is one of my favorite because it illustrates more than one method:
http://www.hgtv.com/hgtv/cr_quilting/article/0,1789,HGTV_3298_1507325,00.html