Yep, I agree with "chucklivesoninmyheart". Megadeth truly helps you alot in the long run.. So much differences from song to song, album to album. In the future at least I think you should listen to some Dream Theater..

But I would really wan't to give you an advice. Don't get stuck in the tabs. I did. After one year I only played after the tabs and I totally stoped "listening" to the songs. I mean, the author of the tabs didn't followed other peoples tabs. They listened to the song and tried to play it, only by guessing out the right tones.. It may take a while, but if you start with ultra-easy songs and just try to find the right way to play it, not using tabs or looking at a live concert to try to see where on the guitar he's playing the riff or whatever, you will start to train your ear. After some weeks, perhaps months, you will with no difficulty make your own tabs from songs you like.. I know that tabs really are temptating, but I only sees it as a trap..

Well, good luck anyway with your guitaring!
/Anders