Thanks for the compliments on my work.

By far, the easiest to use is Adobe Illustrator. I think it runs around $400.00 brand new. Photoshop is nice but it's pricier and is more for photo editing whereas Illustrator is more for creating "vector" based art. photoshop is much more challenging to use.

I learned Illustrator and Photoshop myself, working in it every day over the past 13 years and I have no formal training on a computer at all...completely self-taught.