Perhaps you've joined the SPS Yahoo group that's been going through Colossians--and making some cool creations, as you can see. Or maybe you're doing a study on your own. Either way, here are some Colossians resources:
Bible.org has wonderful audio messages, articles, and textual notes on Colossians.
Dr. Tom Constable, a professor at Dallas Seminary, has compiled extensive notes on the Book of Colossians. He makes his notes available online for free. You can access the .pdf file by following this link: Constable notes
Go here for Matthew Henry's complete commentary on Colossians
For online searches of biblical art relating to Colossians, follow this link to biblical art
After the NET Bible notes, my favorite commentary on Colossians is by Kent Hughes.