I am interested in, rc helicopters. I am on disability so I can not spend a lot of money on a helicopter, also I am not very good at putting things together, really all I want in a helicopter is just be able to fly it in my back yard, could you please tell me a good heli for me

Not an expensive one and ready to fly? Look into the Blade line of helicopters.
http://www.bladehelis.com/

As a side note, ALL helicopters require constant maintenance that will put your skills to the test. If you are not capable of assembling a kit, you might not be capable of providing proper maintenance to the helicopter. You might want to consider a multi rotor that has A LOT less moving parts.

Rafael