Newer to Triathlon and swimming

I did my first tri last year and I signed up to do the same one this year. I am looking to hopefully do a Olympic distance by next year. I have always been a bit of a hang out in the corner away from people, but I am trying to break out of that by joining a team and try and train with people. I would welcome any advise and I hope I can come out of.my shell and hope.yall have a good day/night