Even if it doesn't look like that complicated program, but it has so much features under the hood, that you won't notice everything by yourself that easily. When I started to use it (without docs first) I was still finding new cool things about it after a year. Like different built-in hotkeys, qualifiers, things to rmb and d&d etc
But I'd buy it still even without docs at that price... but I already own it
One of the greatest softwares written for Amiga ever. Still very useful even without new updates. I'm using it on my Amiga and Pegasos all the time.
BTW. I didn't like the original default configs or the Amikit config.. it's better for everyone to examine the program himself and configure it for own needs. And get some external modules for more features (like changing view modes from keyboard, cut/copy/paste, etc things).