RT 6150 Docs (and mouse??)

Hi. Does anyone have pointers for detailed documentation? A mouse, maybe? And which operating system - AIX v2.2, BSD4.3, or AOS - do I want to run? I'm leaning toward AIX, mostly because I work with "modern" AIX, but I'm plenty willing to take suggestions. For that matter, what *is* AOS, anyway? I just found out that I got in first claim for a functional RT 6150. I can't pick it up till tomoroww afternoon, though.... The guy who's giving it away says he "has no boot disk, but it starts up just fine."!? He also thinks it has 3 drives and is maxed out on memory. It comes with a display and keyboard, but no docs and no mouse. I've been googling, and there are a lot of mentions of it, but no real information. This is kind of a special score. I never used computers at all till late '95, and started building my own in '96. That spring, I went to pick up a video card from a guy who had an RT 6151, and it was the first time I really grasped that the world wasn't all Mac & PC. I've wanted one ever since. I guess all things come to those who lurk. Doc