To participate, select the sport that interests you most and then join a league to compete in play. The most commonly played sport is fantasy football, followed by fantasy baseball, which will be detailed below. There are however many other sports that you can play including basketball, hockey, soccer and even MMA=Mixed Martial Arts. These sports are lumped together, because they are played on the international level.
If you're wondering about individual sports like golf and Nascar, these are offered as well, and in several formats. Once you decide on your sport, you can join a public league on one of many sport sites, or you can join a private league, that requires an invitation.
Private leagues are typically a group of friends that know each other and will compete against each other. You may not know all league members, but if you receive an invite to join, it could be an awesome chance to meet people.
Once you have your sport and your league lined up, a draft date will be assigned. The draft date is the most exciting day of any respective fantasy sports season, because this is the day that you will get to choose your team. Once you choose your team, it will be matched up against other members of your league that have all selected their own team of players to compete.
Everyone thinks they have the best team on draft day, but the true draft day winner is not determined until the championship is awarded at the end of the season.
Drafting players really deserves its own section, but naturally it's assumed you are at least a partial fan of the sport you are going to compete in. If so, you are going to draft players not only that you like, but that you think will be productive throughout the year. It is difficult to unpack any further without examining a couple of the bigger sports more closely.