Watch the fingering while the playhead counts you through. Loop the hard bars, mute a part or turn it down, and slow it down until you've got it.
Pick your belt above, then press Play. The fingering on the left shows the note you're on, and the numbers underneath count the beat. Slow it down with the tempo slider until you can play it, then speed it back up. Use Loop bars to practice just the hard part, and the M buttons to mute a part or turn it down. The space bar plays and stops. Nothing you do here gets saved or sent anywhere, so if you change something by accident, just reload the page and it'll come back. Fingerings are baroque soprano and match the chart in your belt packet.