Just stick with it. It's tough to get when you're starting out but it will get easier over time. Randy Rhoads tabs are one of the few that you actually benefit something from learning as a beginner. Mr Crowley is the one to tackle after this one all right. The most difficut thing about Randy Rhoads solos is the speed, he was a great shredder, just slow it down to the point that you can play without mistakes. The speed comes with practice.