You might try contacting the person who runs this blog: http://brownbobbin.blogspot.com/2010...nder-loom.html
because it looks like she bought a Wonder-Loom in 2010 (hope that's not you). Maybe she has the instructions or can give you some guidance.
At any rate, it looks like from her blog description that this is more of a weaving
loom rather than a knitting loom.
I would think that any video or tutorial giving the basics of weaving on a similar looking loom would give you the information you need.