Hi Jeesun,
The good news is there are a ton of events. The (not so good? exciting?) news is there are so many people doing cool AI stuff that a lot of the events have way more people interested than the organizers can handle so a lot of them fill up really fast.
AYou probably saw this, but in case not, Ivan Porollo just posted an updated list of this week's events in #03-ai-events