An FCP tip:
All you long-time FCP users may have discovered this one already, but being self-tought means that I never stumbled across it.
When dragging almost anything in FCP you can ‘slow down’ the effect of your mouse movement by holding down the Command key once you start dragging. This means that you can have many minutes of footage on display on your timeline, as long as you can click on an individual edit or clip, you can roll, ripple, slip or slide at single frame increments. For every couple of pixels to the left or right, you change the value by a frame at a time – even if normally those pixels would represent many frames change on the timeline. You can also drag audio and opacity overlays – even when your track height is small.