Welcome to RCUniverse

I would strongly recommend the simulator like Real Flight

Get with people that already know how to fly to help you. Join a club. Do not try it alone.

The buddy box is the only way to go in actual in flight training. This takes a plane that can use a standard type transmitter

With ARF's you typically need the radio system and engine or motor/batteries. You will also need support equipment like battery chargers for electrics and glow ignitors/fuel for the glow engines and battery volt meters

Glow or electric according to your preference. I sold all my electric stuff and only use the glow engines.