I just purchased the Vision 2 + v3.0. Is there a suggested video  editing package that is good for beginners?  Also, I have an iMac and the video automatically downloads to iPhoto. I can't do much with it there.  Should I just treat the camera as another hard drive and move the video to my desktop or some other folder? Any other suggestions for shooting quality video?

I don't own a Mac, but here are some apps that are commonly used to edit video:

GoPro Studio: http://shop.gopro.com/softwarean ... Studio.html?lang=en
ProDrenalin: http://www.prodrenalin.com/prodrenalin

if you're using a Mac just use iMovie. it should be already on your computer or free in the app store