A metronome is arguably the most important tool in helping musicians prepare excerpts, and music in general. If you don’t have your own metronome, here is a simple one, although there are many also available for free on the internet, or on your phone. I like this one because it reminds me of the one that used to sit on my mother’s piano, before they all became digital (although those old ones didn’t fit in a violin case very well)
To use this metronome:
1) Select a tempo on the right hand side, or enter your own tempo on the top box.
2) Click on the knob to “wind it up.” (Click on it again to stop the tyranny)