Try to stay at the job for as long as possible. Never believe that it'll be easy to find another job and absolutely NEVER quit a job without having another lined up. When you're in your mid-twenties people start expecting you to have YEARS of experience in something, if you don't, keep your head down and keep working.
Regarding coworkers, never talk much about yourself. When asked, be vague. Never give specifics. If there is something about you that they ask and you don't want to reply don't lie, just say you don't think it's an appropriate question or that you don't want to talk about it. Try to find things in common with others and don't sperg out. Work is absolutely NOT THE PLACE to talk about politics, religion, sex or any controversial topic, EVER.
t. got my first job ever at 23
And of course, the most important thing:
https://www.youtube.com/watch?v=lshTmJkwjp0&