If you still have any questions on what you have after checking out the links, let me know.
The trickiest can telling the difference between white border sets with no set symbol - Unlimited, Revised (3rd edition), 4th edition and 5th edition.
Unlimited - no copyright line, darked ink, inside border is double beveled
Revised (3rd Edition) - no copyright line, lighter ink, inside border is single beveled
4th Edition - 1995 copyright line
5th Edition - 1997 copyright line
If you are lucky enough to have a black border card without a set symbol, it is likely an Alpha or Beta card (the first two sets of Magic cards released). Alpha cards have very round corners whereas Beta are "normal" or similar to the rest of the cards printed after that.
I hope that helps.