Bind and fly is an Horizon Hobby brand and there are a wide selection of planes and helis that work with this system. It is based on the Spektrum radio system, so you will want a Spektrum brand radio.
Based on your comments the DX6i is probably a good choice for a radio:
Radio only
http://www.horizonhobby.com/Products...rodID=SPMR6610
With receiver
http://www.horizonhobby.com/Products...ProdID=SPM6610
micro trainers:
Super slow that can be flown indoors or outside in very calm conditions
Vapor - includes lights for night flying
http://www.horizonhobby.com/Products...rodID=PKZU1180
Ember - Endoor or out door in light breeze - fly in yard or front of the house
http://www.horizonhobby.com/Products...ProdID=PKZ3480
#2 Plane
I would recommend aminimum of 600X600 flying space -4 soccer/football fields
Once you gain experience you can fly in half that but will feel cramped.
Super Cub BnF - 3 channel
Great first plane, very rugged - One fo the most successful self trainers on the market.
If your friend has no experience his would be an excellent trainer plane
http://www.horizonhobby.com/Products...380#quickSpecs
Apprentice 15E - PNP - needs receiver and battery
Great for you as you have some experience with ailerons
Use receiver that came with the DX6i that came with a receiver.
http://www.horizonhobby.com/Products...ProdID=EFL2900
#3 More Aerobatic the the first and perhaps a bit faster
T-28 is an excellent choice - BnF
http://www.horizonhobby.com/Products...rodID=PKZU1580
Mini Ultra Stick ARF
By this point you should be ready to put in your own electroncis
http://www.horizonhobby.com/Products...ProdID=EFL2250
Ultra Stick 25 ARF
http://www.horizonhobby.com/Products...ProdID=EFL4025
F27 Stryker BnF- Go Wild
http://www.horizonhobby.com/Products...rodID=PKZU2280
Plane 4 - RC Soaring
Radian Pnp - needs receiver and battery
Relaxing flying for over an hour on a 1300 mah pack
This is my main kind of flying
http://www.horizonhobby.com/Products...ProdID=PKZ4775
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