If you are a beginner, YouTube is your first source of learning, it has tons of tutorials on how to use the software, in addition there are so many talented artists that offers paid courses on Udemy and other platforms for people who wants to master the software.
With the better editions, you get to edit audio clips, access the full version of the DirectWave sampler, and more. FL Studio software comes in four editions, the prices of which correspond to the available function.