I got back into modeling after a 15-year hiatus. It's amazing how quickly it all comes back to you. Maybe it's partly because skills you learn while you're young "set" really well (which is why it's important to learn a language or take up an instrument when you're a kid).
As for resources......It's in need of some repairs and updating, but there's our Hobby FAQ: http://www.finescale.com/fsm/default.aspx?c=ss&id=23 On a very basic level, we've got a little beginner's intro to modeling booklet in PDF format: http://www.finescale.com/fsm/default.aspx?c=ss&id=33
We've got a fair number of old feature stories here on the site; some of them probably cover topics that interest you: http://www.finescale.com/fsm/default.aspx?c=ss&id=4
For the rest, cruise the Forum, and of course,
subscibe to FSM.