[header] How to acquire new skills [title] Time travel. [step] We don't mean that you should make a machine and go to 1990 for the sake of anything, instead search everywhere possible. [substeps] Although everything is becoming more and more online, there are still such things called libraries. 
Whether it is a municipal library or your university library, you will be amazed at some of the books available there that are not accessible online. Specifically search out the hidden treasures and wisdom contained in the really old books to help you acquire that skill.