As a very young, inexperienced self-taught guitarist I know exactly where you're coming from, i.e. "It's every, better learn it".
Look through Johan's section, there's plenty of sweep licks there that'll at least show you what to do, but basically sweep picking is where you play the notes of a chord, one per string, all in the same direction, understanding so far? So, if you've formed the F Major barre chord, it'd look a little like so

|--1----|
|--1----|
|--2----|
|--3----|
|--3----|
|--1----| It tab form, that normal shows you "strum" the chord, right? But, again in tab form, if written like so


|------1-|
|-----1--|
|----2---|
|---3----|
|--3-----|
|-1------| would mean that you play each note seperatly, with me so far? Now, not only do you play each note one at a time, but the pick also travals only one direction, in this case, downwards. No doubt this has only added to your confussion, I apologise, but give you one tip in my certain lack of wisdom, don't feel an idiot by not knowing this, there was probably a time when Hendrix didn't know to play with his teeth, he managed to though, eh? Keep at, playing guitar mightn't be the easiest thing to do, but it's better than giving up. Hope I've helped, check out Johan's section and keep learnin'!

Willdridge, 14 years of complete unwisdom!