Practice takeoffs and landings
This will be the most crucial part of your drone flying experience, and should be the first on your list of things to master. To start your takeoff, gently engage the throttle and compensate for any leanings your drone has by adjusting the pitch and roll.
Landing your drone is done by gently pulling the throttle down in a controlled manner. Once the drone is on the ground, pull the throttle all the way down until your drone rotors are no longer active.
Learn to hover
Learning to hover is actually quite tricky and it can take some time to get the hang of. Nevertheless, this should be attended to early on in your flight training, and when mastered, this means you have good control of your drone.