I dunno dude, what did you use as your search string when you Googled? There is a ton of stuff on the web if I just search for "minor pentatonic scale", including a bunch of YouTube vids.
Basically, most guitarists learn this scale by learning the fingering patterns on the fretboard first. The patterns look like this (NB: this pic says that this is the "blues" scale, which is not quite correct since the actual "blues" scale adds some additional notes, but it gives you the fingering patterns).
They've given suggestions for fingers you can use (fingers 1 to 4 of your left hand), but you can change the fingering to suit yourself (and most guitarists will use slightly different fingerings for the same patterns when doing different runs).
The first shape, on the top left, is usually where players start, since it's easy to remember and you can keep your first finger at the same fret.
Now, playing the patterns on their own won't help you much. You need to play the scale over a chord or chord progression to really get a feel for it. "A Minor" is where plenty of guys start out.
If you can record, or have someone jam along, or even search for a backing track online, look for a I-IV-V progression in A minor or create one yourself. It would be these three chords:
A - D - E
Search online for a twelve bar blues in A Minor, as a good place to start.
Now, to play this scale over that chord progression, you're going to use the above patterns, with your root note being an A.
In other words, take position 1 above (top left), and start playing it on the 5th fret of your low E (6th) string. That fifth fret note is an A. So, your first finger is going to fret that A, and then you'll move up through the rest of the pattern in ascending order, then back down in descending order. Play the notes on each beat if you can, or on each 2nd beat or whatever is comfortable, go with what you feel.
That's how you get started. You'll need to slowly learn the rest of the shapes and how they all hook together (you'll see that each shape "leads into" the next, especially if you map the scale out over the whole fret-board).
To play the scale in a different key, just move your shapes up or down. In the pic above, they have said you should start the first shape on the third fret, which is a "G". You could then play over a progression in the key of G (e.g. G C D).
This is only the proverbial tip of the iceberg though. It's important to understand what the minor pentatonic scale IS: what is the step pattern in terms of semi-tone intervals etc. The reason that the pentatonic is so popular with guitarists is largely because:
a) It's an easy scale to play and remember on the guitar fingerboard
b) It sounds good across most progressions because it omits the most dissonant (kak sounding) semi-tone intervals found in the major and minor scales
Blues and Rock rely really heavily on this scale. Guys like Clapton, SRV, Angus Young and Slash have often used it almost exclusively.
I'm sure others have lots to add, but the above should get you going.
PS: the major pentatonic has the same fingering pattern as the minor pentatonic. So you effectively get 2 scales in one. ? The only difference is which note you start on, and which chords you use it over, but that's for next time.
