As I Recall: Friendship is Magic is a non-profit, fan made trading card game based on the hit show My Little Pony: Friendship is Magic. If you're reading this then thank you for expressing interesting in playing and this post will try and get you started as quickly as possible.
The first thing you should look at is the wiki. This contains just about everything you need to know about playing the game including the rules and a database on every card including any errata.
Next you will need to get the game itself. We currently use a plugin for a program called LackeyCCG. To add this game, first download LackeyCCG, then the plugin info. Once you have both, open LackeyCCG and go to Preferences. Click on the button labeled "Browse Installed plugins to load one...." and then click on "Open Directory". Move the AIRFiM plugin to that directory and then choose it. That's it, you are now ready to play.
Download LackeyCCG from their homepage. (Until further notice, you should probably download Lackey separately since they recently updated).
Current Version of game is 2.0. or above. Please go here for the download.