I like it, I agree with the GH comment, I used twitter, your tutorial is great, though a bit long, didn't wait till the end. I would add a "skip the basics" op

I like it, I agree with the GH comment, I used twitter, your tutorial is great, though a bit long, didn't wait till the end. I would add a "skip the basics" option for people who already know adding numbers. but besides that looks great, but how are you different from all the others? (See partial list here http://eranmedan.com/post/22359967135/codeschools http://eranmedan.com/post/22359967135/codeschools)