[raxxorraxor]

For me it was working with other engineers, especially those outside my domain as well. You have to get a bit lucky for such opportunities sadly and the scope will still be limited. You cannot know everything, not even about the topics you specialize in.

If you haven't any unofficial tutors, start some projects. Exchange about a topic on the net can help too. Still remember that you cannot know everything and everyone had to learn how to solve certain problems. You get better with more experience.