|Posted by mookster|
You don't seem to know much in general.
Indeed. Look Urbexing Out, why don't you take a trip through the archived posts of the rookie section. Almost every conceivable question a new explorer might want to know has probably been asked and answered at least once already. Dig through those archives, maybe lurk a bit. You'll find the answers you're looking for if you do.
In fact, why don't you order a copy of Access All Areas
by Ninjalicious. It's only $15, and it will answer every single one of the questions you have right now, plus a few you never realized you wanted to ask. It's more comprehensive than this forum will ever be.