Yeah, I found codes via searching. I'm assuming all I have to do is register and put in the code, correct?

I figured the order of my tests would be...

Algebra - know everything just need to refresh the principles and concepts
Info systems - know most of the stuff so with a study shouldn't be a problem
Biology - hardest for me I don't know anything really
German - I have a while to work on this

Oh, are the tests exactly like the other standardized tests where if you get one question wrong they subtract like a quarter of a point or something?