If you become a bitcoin expert First you gathered a huge knowledge about bitcoin. Then you go to google and research more about bitcoin. Then you use bitcoin. So i think one day you will become a bitcoin expert.
In order to become bitcoin expert knowledge should be acquire. Because without this you can be dumb and no nothing in terms of cryptocurrency. So should read, learned and apply to become a bitcoin expert.
It takes time and experience,ince we experienced it and see how it goes and done. We can eventually make it. Btc is a continuous study for its innovation still have lots to offer.