There are several different skydiving disciplines, and most people choose to focus on one or two, at least for periods of their skydiving careers. Every discipline can be as casual or competitive as you make it. Put a team together of people who have the same goals as you. No matter whether you're planning to attend USPA Nationals or just improve your skydiving skills, it's sure to be a blast.
Or if teaching's more your thing, work toward getting a rating. It's a great way to give back to the sport and you can earn money, too.
And don't forget about all the cool things you can now work toward—earning other licenses, night jumps, water training, camera jumps, wingsuit training ... the list of fun is never ending.