Good evening everyone - I just started this course on the beginner level on Saturday.  I've gone through several lessons and enjoying what I am learning.  My question is, what would be the best scale to learn that would help me choose the right string and fret as I start learning how to play the guitar?  Something I could play for 5 minutes before I start a lesson on the website. I just want to be able to play the right notes as I try and play the songs that are given in the basic training module. 

Thank you in advance for your help,

Mark