This is very relevant to recent college graduates, as well. Being a junior dev. myself (albeit at a much larger company), I think the key advice is: Ask a lot of questions. If you don't understand something, just ask somebody.
Like it or not, 90% of documentation for enterprise code bases, websites, frameworks, etc. is in developers' heads. It's not written down. It's not obvious from the code. There are edge cases you don't understand. There are hidden dependencies. There is tight coupling and opaque architecture. You have to ask. It won't bother people... much.
Like it or not, 90% of documentation for enterprise code bases, websites, frameworks, etc. is in developers' heads. It's not written down. It's not obvious from the code. There are edge cases you don't understand. There are hidden dependencies. There is tight coupling and opaque architecture. You have to ask. It won't bother people... much.