Manage the finger pain. There'll be a point at which things will seem bleak: you can't quite get to each chord as fast as you want, your fingers are killing you, and it seems easier to put the thing back in its case. The reason most guitar players stop playing a few weeks in is that it hurts. After a couple of months and years of playing, callouses will build up on the fingers of your fretting hand that will greatly reduce the pain of pushing down the strings for long periods of time. Everyone who learns to play the guitar has to deal with sore fingers at the beginning. Learn to love the pain and associate it with everything that you love about music and the guitar.
The simplest answer and the one that no student that ever wants to hear is practice. Changing chords is the process where many beginners fail, and quit. But after that, the rewards will be simply impressive. There are a few tricks to get a chord transition to happen faster. Use a metronome: Set it on four beats and set it as fast or as slow as you want. Then get a chord in your mind, say D. When the metronome reaches its last beat, press down the strings. When it happens again, strum it and let it free. Then again. Do this 10 to 20 minutes a day and in less than a week, the chord progression will begin to sound much better.
I tried several times over the course of 20 years to learn guitar. I purchased guitars, amps, books, private lessons. Nothing ever stuck, until I found justinguitar.com. The only reason I can play guitar today is because of Justin. His courses are well thought out, easy to understand, easy to follow, and easy to make progress on. I can't think of a single product or service that I've ever used in my life that I could recommend more highly than justinguitar.com.
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