You're not being a cunt at all; researching/finding locations is probably the hardest thing for the raw novice to get the hang of, but simultaneously the most important thing to urbexing. There's a bunch of ways to do it, it depends on the sort of explore you like and where you live.
Personally, I'm really fond of asylums, so I'll search state records (a blessed amount of which are online) for asylums and see what's still operating, what's been converted into an old folks home, and what's just been abandoned.
You can do similar searches through your local library, state records, and online for a lot of different types of places. Asylums, Prisons, government buildings (although government buildings have almost always been repurposed or demolished rather than abandoned), et cetera. Realty sites are also a good way to find houses that no one is living in.
You can start looking into stories and history in your area, too. Abandoned towns, that abandoned house your grandmother and her friends used to think had a witch in it, that boarded-up building your waiter saw the one time. People are a fantastic resource, just be careful what you tell them. Not everyone takes kindly to criminal trespass.
Taking a drive down the shitty part of town, the mediocre part of town, or in the sticks is another good way to find places that have been pretty obviously abandoned. Just keep your eyes open during your routine, and take a new way home when you can.
You'd be surprised how many abandoned buildings there are on or near your commute.
Finally, pull up google maps. If you follow the railroad (especially decommissioned railroads), you'll find industry, and more importantly: you'll find failed industry. Abandoned railyards and factories are fucking cool.
Some more info:http://www.uer.ca/forum_showthread.asp?fid=1&threadid=83183