I started using the metronone a few weeks ago when practicing scales and stuff. Basically just start by playing a single note on each beat (for a few seconds before playing, tap your foot to your beat to kind of get into it) and when you feel up to it start trying eighth-notes (instead of "One Two Three Four One Two Three Four" it would be "One and Two and Three and Four and One and Two and Three and Four and"). I'm having some trouble playing eighth notes at higher metronome speeds (176), I lose the beat easily. Probably just needs practice, but maybe someone more experienced could give me a few pointers.