I know this is pretty much one of the noobiest questions ever but how exactly do u use a metronome??
first of all..... take a gander at the instruction booklet that came with it....................
If you want to shine like the sun first you must burn like it.

I use that, im always next to my computer, and its easy to use.

You ever tap your foot to music? thats the beat thats with a metronome, more or less...but a metronome keeps it exact, and by increasing it, or slowing it, it can change how fast you play. If you play along with it.

Usually what people who want to do to get faster is get some sort of finger excerise. And play it slower, and gradually increase it every few days or weeks