So i've been playing for a while, and I should know this by now, but Im still not 100% what Intonation means...so yea, could someone tell me?
Intonation describes what happens to a string's tuning when you press it to a fret. It is stretched a tiny bit more than when the string is 'open'. So you make an adjustment to the bridge to shorten or lengthen the string a bit so that even when you put the pressure on it, it is still playing the correct note. Now, go and search for how to set the intonation on your guitar (methods are a bit different depending in the bridge type) and your guitar will sound amazingly good all over the fretboard.