Hi Steve, glad you got it loaded. I found it is quite quick and easy to use the command line once you get into it’s style. However, I am part of the generation that used punch cards and paper tape before the Commadore PET and then DOS. Indeed the first computer I worked on had a ferrite core!
The graphics windows in IRAF are of a style of their own so you need to look at the documentation and tutorials. Again it gets easy with practice.