There really is no easy way around it, to become a more accomplished guitarist you just have to put in the time, and try your best to find your sweet spot. All of the proper fingerings are listed, and believe me there are some pretty tricky chord progressions along the way, but one of the best ways to get better results is to try and work on more than one arrangement at a time, that way you can keep your motivation level much higher than it usually is. Set time schedules for yourself, 10 minutes on one arrangment 10 minutes on another, and before you know it you'll have each part down pat...

-Joseph