Its how i got started. The most common RC helicopters are called Concept 30 and 60 made in japan. I had a sixty, took me 3 months to build it then i had to take it to a specialist to sort it out.
After twenty hours training sort of got the basics but extremely tricky to fly especailly when its coming at you ( all controls reversed ) The power is extreme, vertical climbs to its out of sight in seconds
But at the end of the day its the same as the real thing you just need two arms and legs (quick legs help to get out of the way when its screaming at you).
I stopped after falling out of several trees retrieving it, no joke!!!!