YouDontHasToCallMeJohnson
So, what college courses use Sonar?
Berklee might have one. I know they cover a few specific DAWs.
In reply to the OP:
Learning any DAW is a daunting experience, especially if you don't have a tech background. Craig was correct in his characterization of Sonar as a complete studio, it's like the head engineer of a major studio handing the keys to the door and telling you "Good luck, make sure you lock up when you're done".
The simplest possible approach:
1. Make sure your audio interface works.
2. Verify that Sonar can see it.
3. Add an audio track and set its input to where you have your mic connected.
4. Hit record on the track and set your record level, -12 to -18 Db is a reasonable level on the record meter.
5. Hit the record button and play your part.
The rest is up to you. It'll probably take you around 10 years to get up to speed, that's normal.