Are there any hand excesses to help you play Guitar Better?!

Are there any hand excesses to help you play Guitar Better?

So are there because there is this song called Tribute by Tenacious D and I really want to play it. I have everything right except I cant do the hammer on parts fast enough and also how in the hell do you play six strings at one time, when none of them are open strings.

Well to answer the 1st part, I've found the best exercise is just simple practice. YOu can learn a scale and repeat it over and over for about 10 mins try different positions on the neck, rest about 5 mins and try again. Hammer on and pull offs are all about repetition also,Try the specific hammer on and pull of in the song your learning for 5 mins straight! Till it hurts then rest 20 mins and start over trying to increase your speed every time you come back, before you know it about a week later you will be twice to 3 times as fast usually after a day you motice a diff sometimes after just 2 - 10 min sessions after you rest it sounds like your faster. I know its boring but its the only way you will ever play like the guys you listen to! I used to think Yngwie's Music was untouchable and after 15+ years its still tough but it can be done! Now the feeling & passion he play's with maybe not that just cant be taught or learned but his speed yes!. Ohh and to play 6 strings you use a Barr chord, to do this lay your pointer finger across all six strings and fret the rest as needed for what ever chord your playing,I'd really need to see the chord to tell you proper because sometime players use thier thumb! Kinda tough. I can tell you are somewhat new to the guitar so i'd suggest lessons or a good Mel Bay starter book! Good Luck :)