I find a few threads that essentially say "you don't have to do that", so here goes: I already can find how to move the Home folder for a single user off my SSD. I think I have an idea how to do that for multiple users, but haven't tried it yet. The big one is, with only a 128GB SSD I don't want to load up too many applications on it. Once I start getting a slew of games from Steam, I'm bound to fill up and slow down the SSD. I'd like a good way to move the directory those applications will install in over to the 2TB HDD (sdb1). SSDs run slow if you fill them up, so please don't tell me to just let it go. This is a real issue for more and more of us now that you can get a SSD like mine for around $60.
What I suspect I can do, but am not so sure, is to use the same technique for moving the Home folder to move the usr directory, or maybe better yet just usr\games (if that's where Steam will put the games I get) over to the HDD. Could someone give an example of doing that? I'd move it right after a fresh install, if that simplifies things.