Didactic

Didactic: Intended to convey instruction and information as well as pleasure and entertainment.

The example that I drew was a Youtube Video that will teach one to make friends using Google Chrome and Youtube. Plus there is a cool instructor in it who happens to have a lot of friends.

Sources:

http://www.merriam-webster.com/dictionary/didactic

http://www.uncp.edu/home/canada/work/allam/general/glossary.htm