Love, at zero cost this Labor Day weekend. The offer will being around 1AM ET this Friday, at which point you'll be able to download the client on the game's official site. This free sample will be available until 7AM ET on Monday.
Now, that's what you have to do to get in on the free Love weekend. What you should do is watch this gameplay demonstration, so you'll know what the hell you're doing once you start making changes to the MMO's completely procedural world.