Tuning the guitar with the auto tuner is not that hard. First you turn on the power button, you will see a green light flashing. Start with The 6th string at the top of the guitar. Use your pick to gently strike only that string once and let the sound ring out. The lights located below where it says 6E should light up red. Below that, where you see the 3 Led Lights, is what you need to watch to see if it lights up to left indicating that the note is flat and you need to tighten the string or if it lights up to right meaning the note is too sharp then you will need to loosen the string. Which ever is the case, turn the tuning key a litte at a time and strike the string once more, you will know that the string is tuned when you see the middle LED light is steadily green. When you have the first string tuned continue on to the next string, striking only one string at a time until you are done. Your guitar should sound great when you strike across all the strings at the same time. Good Luck!