When you are learning to play guitar, it is important to build up your finger strength and be able to use all of the fingers on your fret hand equally.
I found a cool video on You tube that demonstrates a pretty simple excercise to get your fret hand finger strength up. Practice this exercise for a few minutes a day and you will find that your fret hand finger strength will improve in no time.
The guitar strings may be painful at first, but that will pass as you build up calluses on your finger tips.
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