Welcome, Sortiariux! We have a whole bunch of events here. Art/writing contests, battling events, special holiday-themed challenges and other neat little things. It really depends - be sure to explore the forum to see what goes on! The moderators add new things pretty frequently. I'm not sure if we'll have a Christmas get-together this year but there's also that to look forward to in certain years.
Super glad you've joined PC, though! :3 This place is pretty darn amazing and you'll likely find a lot of people to help or befriend you along the way. I have Pokemon X and am about to turn it on to do some breeding.. fun. Hopefully I'll be able to tackle getting more shinies afterwards, especially since the holiday break is coming up.
Enjoy your time here! Hope to see you around and do shoot the staff a message if you need help.