With such an emphasis on documentation, it’s important you use it.
When you have a question, attempt to search for it first. Self-service and see what you can get done on your own. If you’re just starting out, this may feel slow and overwhelming at first, but it’s a good way to get to know where things are at, and to learn about how we’ve done things in the past.
If you cannot find what you are looking for, then you should ask. That person should answer with documentation of their own. Be helpful and create a blank doc for them to fill out.