One of the most important things I have learned since I started working is that it’s okay to not know things. This was really surprising for me because in uni I always felt like I should already know everything - if a professor mentioned something they were not teaching in that course I mostly didn’t ask since I thought it was a prerequisite.
At work, no one cares. Or rather, everyone knows that you can’t know everything because there are SO MANY tools and frameworks and methods of doing stuff that you can’t possibly know them all. Especially if you’re fresh out of uni/college! Man, programming at uni and actually building software in the industry are so vastly different, it’s like learning to program all over again. And your colleagues know that you didn’t use Tomcat or Docker or Hibernate or Java EE because why would you? It’s okay!
This is why I don’t hesitate to ask anything, even things that seem to be self-evident to everyone else. Because I’ve never gotten a bad reaction from anyone finding out I didn’t know something. No condescension, no irritation, no confusion. Just explanations in a reasonable tone of voice in a way I could understand. So don’t be afraid, it might take some getting used to but this way you’ll learn so much and will be a lot more relaxed.
(That’s not to say I don’t have any problems at work or that there is no awkwardness. The social and organisational stuff is not as easy, but I never feel bad asking about technical stuff.)