Getting started
There are a couple of low-costs paths for the beginner. The first is with a semi-rigid foam model of around 2 meters span, with rudder, elevator and aileron controls. Alternatively, many pilots start with a simple 2-channel flying wing. Both types are very durable and a quick Google search will reveal suitable sources.
An inexpensive radio with four channels is all that’s needed to get going. As you progress with larger and more sophisticated models, you may want to add spoilers or brakes for more precise landings.