Listed are some of the sites loom knitters will find helpful.
Yarn Substitutes Can’t find the yarn you are looking for. Yarnsub.com is the place to go to find a yarn that will work just as well.
Loom Knitting Books
Click Here For Loom Patterns! Looney For Looms Loom Patterns For Sweaters For The Baby, Toddler & Small Dog. There Are Adorable Booties For Babies, Super Warm Slippers For Adults, Popular Doll Clothes And More. Knifty Knitter Looms Or Any Similar In Gauge Will Do. (affiliated link which means I may get a small amount which will help to support this site if you use the link.)
http://theideasandcreationsfromthemuse.blogspot.com/2013/06/tennis-shoe-booties-pattern.html Free loom knitting patterns (tennis shoe booties and more.)
http://www.loomknitting.com/ A little bit of everything for loom knitters. The site includes patterns and instructions.
http://www.bevscountrycottage.com/loomed-patterns.html A few patterns and loom knitting instructions.
http://www.loomknittingdesigns.com/patterns_free.html More free loom knitting patterns and instructions.
http://lkc.typepad.com/lkc/fall2012designs.html Free Loom knitting patterns shared by Isela Phelps on her site Loom Knitters Circle.
http://isela.typepad.com/loomknitting/ Some good loom knitting patterns and videos.
http://pinterest.com/ Check out the loom knitting group here. Plenty of good loom knitting pins.
http://loomdude.com/cool_projects.htm Projects you may get some inspiration from.
http://www.ravelry.com/ Raverly is a knitting website boasting upwards of 2,000,000 users. You will find plenty of resources for knitters there.
http://www.lisaclarke.net/2013/02/05/loom-knit-earwarmer/ PolkaDotCottage/LisaClarke.net is a good place to learn how to translate patterns designed for needle knitting into loom knitting patterns. You will also find other good loom knitting tutorials and resources here.
http://www.goodknitkisses.com/GoodKnit_Kisses/Home.html Lots of good stuff for loom knitters here.