Knitting Looms

There are different sorts of Knitting Looms- ones I have are called Knifty Knitter by Provo craft. Which is the first picture. These are plastic.
Some of the looms come in wood. There are several books on loom crafts. These books are available on first site I mentioned:

http://decoraccentsinc.com/loomsbycategory.html

http://bevq.blogspot.com/

http://www.loomroom.com/

The loomroom has videos.