You have to register, but you get access to BMW owner resources and owner manuals.

http://www.bmwusa.com/ownerscircle/

What store would I be able to buy a owners manual for a 94 beamer?

Off-hand, EBay's a great place.

For more questions like this, you should look at joining the BMWCCA, or the Rennlist, or I think there's a forum, club or magazine called "Roundel".