MicrostockGroup

Could you please recommend me some good basic tutorials for making very simple vectors? Like the letters A B C, or stick figures. I will never become an artist, but would like to learn a bit more about how vectors are created. I use photoshop, and have got access to Illustrator.

I know how to do a clipping path with the pen tool, but thats about it. I tried to trace a rock carving, but got stuck on what to do when you got several lines that couldn't be connected to each other. 

Thank you very much!