My gosh I just can't believe all the replies here! I have been searching forever for a forum that talks about these!
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Here is a link to the book, are we allowed to do this here?
http://www.amazon.com/One-Block-Wond...4659820&sr=8-1
I had signed up for a class in this and it got canceled, so I sat down with my book and went page by page. If I can do it, anybody can!!!