You're going to want to learn power chords for electric guitar. I don't know if you know how to read guitar tabs but basically it's like this:
E
B
G
D
A
E
Those are your six strings on a guitar. The EAD being the top strings closest to you (they are lower notes), the GBE strings being the ones closest to the ground, the bottom ones I guess (they have higher notes). When you read guitar tabs... the lines represent the strings and the numbers represent the frets. An example being:
E---------------------
B---------------------
G---------------------
D---4---4----6---6---
A---4---4----6---6---
E---2---2----4---4---
You just put your finger on the second and fourth frets (frets are the little sections/spaces on the guitar neck) and that's the 244 power chord. I'm not exactly sure what note that is off the top of my head. But you basically just do that all up and down the neck and you get all kinds of different chords. 022 just means you only put your fingers on fret 2 for two of the strings while the "0" means you just pick that string without putting a finger on it. That's called "open."
Basically all of rock is built around power chords, which you use because the kind of chords used for say acoustic guitar do not sound as good with distortion. I'm talking like the G C E A D chords. You would most likely only use those kinds of chords on electric guitar when it's on clean.
Be sure you don't strum the strings that do not have any numbers on them. Like above, the GBE strings in my example. I mean, you can, it won't matter too much if it's on heavy distortion, but it does kind of make the chord sound "messy."
And in tablature, "h" ... like "3h4" means to "hammer on." Or to pluck your string while one finger is on fret 3 and while it's ringing you put the other finger down on fret 4 to change the note. If you just try it, you'd know what I'm talking about. There's also "p" or something like "3p" which means to pull off... which is kind of the opposite. You pluck the string with your finger on the 3rd fret and then remove it while the string is ringing.
Uhhh "x" usually means you either do not play the strings or you mute them by putting your hand over the strings or something to that effect.
OH... and another important technique is PALM MUTING. Where you rest the back of your palm against the strings at the bottom of your guitar (near the bridge, which is that metal thing at the bottom below the pick-ups)... while plucking to kind of mute the sound and then play them open to be louder. Kind of like making the verses of a song quiet and then the chorus LOUD. You want to kind of only gently rest your palm on the strings... not tooo much. Kind of a delicate thing. But it's not really too hard to figure out.
I just thought I'd give you some pointers in case you didn't know. That's good stuff to know to begin learning electric guitar.
Also. LEARN HOW TO HOLD THE PICK RIGHT!! It doesn't seem important. I know. But the problem is, by the time you figure out that it is important, you'll have learned it wrong and picked up a bad habit making your technique sloppier. Google the right way to hold the pick. I thought forever that it isn't important and then realized it kind of is after playing for awhile.
Anyway. Hope something there helps you out. Good luck! Don't give up!