I don't own this heli, but I have a friend who does =)

Basically the quality is poor, reliability is poor, and the electronics are very poor. I wouldn't recommend this heli, especially for a starter heli.

3d basically means that the heli can fly inverted and has either mechanical mixing or ccpm, ususally 120 degrees. This means the heli can adjust the pitch of the blades either positive or negative and is usually called collective pitch.

hopefully that helps =)