~ A Sanskrit proverb.
What is a quick method to gain wisdom in a particular field?
The quickest way to gain wisdom is to learn hands on from whatever expert in that particular field.
Three key words here:
Expert: go find an expert in the topic that you want to excel in.
Hands on: We are not talking about theory here. Learn by doing.
Quickest: This is all about productivity, not that you cannot get there by yourself.