In 1990, I made a major career change, after being a hospital pharmacy technician for ten years. It took me some time to decide what I wanted to be when I grew up, but I decided to go into the field of industrial Purchasing, and enrolled in a community college with a 2-year degree in Purchasing Management.
If you find a dimension intereseting, we recommend you pick up one or two facts that you find intriguing and place them into your memory. That way you will have 2nd degree information about the topic if it comes up in conversation.
Accordingly, you can do the same with others as well.