Seems they’ve got you covered on figuring out the bpm..as far as running scales or doing different exercises.. The easiest way, especially if you’re just getting started using a metronome, is to play a note on every click. Doing so is called a Quarter note..it’s worth one beat in 4/4 timing.. And of course you count it as 1-2-3-4. 4 beats makes up a measure in 4/4 so you start counting at 1 again. You can pretty much max out your metronome in this way.. Then start at a slow tempo again and do Eighth notes..they’re worth 1/2 a beat in 4/4 timing..counted as 1 & – 2 & – 3 & – 4 &.. Meaning you can fit twice as many notes in a measure. Then there’s Sixteenth notes..worth 1/4 of a beat in 4/4. You count them as 1 e & uh – 2 e & uh – 3 e & uh – 4 e & uh. Then you have Triplets and Sixteenth note triples..but I’m gonna stop here because I don’t want to confuse you too much..I hope I didn’t already. There’s a lot to be said about this stuff and this is just kind of a basic rundown! Hope it helps! Hah at least a little