Another Mopar Off My Bucket List - Barracuda Fastback

As much as I pride myself in learning new things I've had miserable luck learning to use a few of the non-Microsoft paint programs in the past. If I cannot get the results I want with my current plan I'll be taking your suggestion. So, is there a good image program out there that's designed for dummies? What's the simplest to use with good results?
Seems like the various Corel-Draw products are very popular. I never felt like spending the money on them or spending the time required to learn them. Here is a site that explains how to make vector based graphics (and much more): Design your own Alps / OKI custom decals