In the past I used Pinnacle Studio before settling on Adobe Premiere.
Pinnacle is quite user friendly (at least the versions I used were.)
Premiere is expensive and there is a cut-down version called Adobe Premiere Element. However, I'm not sure if both is within your budget.
I believe most video editing progams have a free trial for 30 days.
Sorry that I can't give you advice in better details... but I'm sure you will receive better response from a video forum.
Nikon D90, D80
Nikkor 16-85mm AF-S DX F/3.5-5.6G ED VR, Tamron SP AF 28-75mm F/2.8 XR Di LD Aspherical (IF) macro, Nikkor 50mm F/1.4D, Nikkor 50mm F/1.8D, Nikkor AF-S VR 70-300mm F/4.5-5.6G IF-ED, Sigma 105mm F/2.8 EX DG Macro ||| 2x SB800 | SB600 ||| Manfrotto 190XB