I'm thinkin' if you can be 'arsed' to find a partner, then you probably don't really want to get laid...But the easiest way, if you must know, is online personals. They run the gamut from serious relationships to swingers and a modicum of effort will yield results in short order.
A lot of other factors come into play, though for this to work. Are you in a major metro area? If so, there's more partners to choose from. Do you have home internet access? (Just asking, you might be posting from a public POA) If so, good for you! Pick a couple of sites and get into the whole community if possible. There's POF (plenty of free) *hint* sites out there to pick. You can AFF (also find freaks) *hint* if you know where to look...
Get a cam, brush up on your conversational skills and have fun with it. Get an IM account and you can make it happen easily. I have literally gone from typing 'hello' in a chatroom to start a conversation to having the same lovely lady knock on my door an hour later; she was naked in another 20 minutes and the whole experience was great. I did the entire pickup in my boxers while drinking a beer (yes, I changed clothes before she arrived!). She wasn't a slut or a freak, just a bored and lonely divorcee whose company I thorougly enjoyed.