Now I am sure you didn't mean to sound rude, but that is how it came across. Hoogleman had no way of knowing if you work in Photoshop or not. It is a good tutorial but obviously if you aren't familiar, experienced even, with Photoshop you'd have a hard time -- or no time -- doing it.
I've never tried something like this before so I haven't done a very good job. I should have increased the contrast more and tried different threshold settings, but nevertheless, here is my contribution. It was a good exercise for me. I think it looks more like a Picasso than an Obama Hope Poster!!
What's with the "I need it for school" business? Are you in a Photoshop class or something else?