Learning how to tune a guitar isn't all that hard. As long as you have a 6 string guitar,the tuning process is the same for majority of the songs that you will be playing.
Of course the fastest way to tune a guitar is to buy an electronic tuner. A simple one can cost about $10 to good ones that costs over $50. You can pick one off Amazon and have it shipped to your doorstep.
I am using the Qwik Tune QT1 Guitar and Bass Tuner from Amazon. It's cheap in case I lose it but not exactly the best tuner there is, also not useful if you progress to advanced levels that need tuning away from the standard EADGBE. It doesn't perform all too well in a noisy environment. Shop around Amazon, if you feel like spending a little more go for the Korg GT-120 Needle VU Chromatic Guitar and Bass Tuner
Let's not get too carried away with electronic tuners for the moment.
With a little practice, you can tune a guitar within a minute!


