Thou shalt not skimp on tuning! Being in tune is essential to training your ear to understand the guitar. It is also essential to you sounding your best at all times, and to being able to play along with other musicians.

Get comfortable with the electronic tuner of your choice. Memorize the manual tuning system. Be sure you can identify and name the strings by letter name, and by number, and don't forget to tune your guitar every time you play.