Have to admit I'm surprised at how easy the rulers are to use; I made this  different design in my second square simply by rotating the ruler 180 degrees. (See my "oops", where I wasn't careful lining up the ruler?)

And here's my third block, creating by merging the first two.

Though my stitches are not even (they said not to worry about this at the beginning) and I'm getting a bit of a clump of thread in the center, considering the very short amount of time I've been at this today I'm quite jazzed about the lack of a serious learning curve!