Regular school with online supplement?

<p>Hey, guys!
I'm not a homeschool student as in I still go to a regular high school but am wondering if I should/could take online courses (that would give me a transcript)?</p>

<p>Like taking AP Art history online or something similar...
Has anyone done anything similar to this?</p>

<p>In addition, does anyone know any colleges that offer online DE that are pretty cheap?
I heard that the common app does not allow one to list online college courses but I might be wrong...</p>