I can't believe I finally got it done. It might have taken 8 months but it was well worth the end result. I was going for a queen size blanket but with my joining method it hangs over the side of my bed which is why the photo's were taken on the floor.
You can find the link to all 99, 8 inch squares here: http://www.knotyournanascrochet.com/2013/04/granny-square-cal-week-one.html
I joined using the ch method which you can find instructions for here http://www.garnstudio.com/lang/us/pattern.php?id=4478&lang=us
The border was made up of 4 rounds of hdc. Place 3 hdc into each corner to turn.
The last round was a follows: Ch 5 (counts as first hdc and ch 3), sl st into the 3rd ch from the hook (to make picot) hdc into the same stitch, *ch 1, skip 1 stitch, sc into the next st, ch 1, skip 1 stitch (hdc, ch 3, sl st into the 3rd ch from the hook, hdc) all into next stitch.* Repeat around. Join to top of first hdc (ch 2) with a sl st. Finish off.