How do you edit a song in fl studio?
All you need to do is click the Razor icon located in the Playlist window, then click and drag the tool down to slice the clip. If you click and drag over multiple tracks, all tracks will be sliced. Click the Magnet icon to change the Snap to Grid value. This will adjust where the slice will be applied.
Is recreating beats good practice?
If you are new, you don't need to worry about finding your own sound yet, and beat remakes are a great way to get an idea of what you need to learn, because you will have a much more concrete goal when practicing.