I am really fascinated with these quilts and would love to make one as a lap quilt. Is there a good tutorial out there for these, and are they really hard to make. How about fabric selection. What size repeat would you suggest for a lap/couch throw size/

Cutebuns did a class here on the board, it is in the Main section. There are 4 or 5 parts to it. :D:D:D

This is what I followed to make mine, Cutebuns did a great job.

It starts here
http://www.quiltingboard.com/t-35100-1.htm

Then this is about cutting
http://www.quiltingboard.com/t-35685-1.htm

Then the assembly
http://www.quiltingboard.com/t-36316-1.htm

then layout
http://www.quiltingboard.com/t-36954-1.htm

Give one a go, they are really fun and not as hard as they look

What is an OBW quilt? I don't think that I've heard of this one.

One Block Wonder from the books by Maxine Rosenthal. If you do a search there are some amazing ones on the quilting board

Search your local library. Mine has 3 OBW books.