How many kitesurfing classes do you have to take to learn?
There is no specific answer to this question, since it will depend on your previous experience and your speed or ability to learn.
The normal thing is that after about 10 hours you will be able to start sailing without the supervision of a friend who practices, or a monitor.
The normal thing is to divide those hours into 3 or 4 days. From there, the user usually already has the necessary initial knowledge. Although it is true, the instructor must corroborate it and make sure that you can go sailing alone.
In this guide about the Private Kitesurf course you will find an estimate on how many hours we recommend in our school to learn how to kitesurf