It's not so bad! It's fairly intuitive after a youtube video tutorial or two. (It's also free to download here, as a trial.)

https://www.rhino3d.com/download

I'd say that the hardest part of Rhino is navigating different commands. It can do just about anything you want, it's just a matter of getting in a rhythm of knowing where to extrude X or rotate Y or create a circle etc... once you nail down 4-5 commands, you can have a lot of fun with it.

Importing a picture is super easy!
Command : "pictureframe"