How do you enrich your knowledge?

Read a few books, ask you mum or your grandma, grandad, dad and anyone else, or even just sometimes wonder how things happen, easy way to enrich your knowledge.

You can use both. You can use "knowledge of" when you are saying that you have the knowledge of something specific. You can use "knowledge in" when you're talking about a vast area/field of...

Reading books, talking to others , watching TV , using the internet , working out problems yourself, etc

she has a wealth of knowledge.

Knowledge management deals with all the knowledge assets of the organization. It encompasses knowledge held at the individual and organizational level, and includes both useful and obsolete knowledge...