How do I start Urban Exploration? Please help.

Google.com

You go to an urban area and explore, idiot. Don't use known location if you want to be unique.

>>1067272
You have to have friends with you, I don't recommend doing this alone as many of these places can be dangerous.

For something easy that you can do alone, just walk along a railroad track or a river and see where it takes you. Your bound to find something interesting along the way, like graffiti, litter, or abandoned items.