I've long held that knowledge comes in one of 2 flavors: borrowed or earned. Let me illustrate by example.

If someone comes to me and says "How does Application.OnException work?", the odds of that person ever retaining that information and converting it into knowledge is rare. BOCTAOE. The exception would be people who are human sponges who can soak information in, and retain it, much like trivia experts. The information becomes "borrowed knowledge".

On the other hand, if someone takes the time to look at the online help and/or manuals, search through the source code to see how it works, searches online, and writes test cases to exercise the functionality, then they have a much better chance of retaining the information. In short, they have earned the knowledge. You can start by borrowing knowledge to figure out where to go/what to do in order to earn the knowledge, but the last step of truly obtaining "earned knowledge" falls on you.