Don't forget to check out the MELPA (melpa.org) repository, which has a staggering array of packages for Emacs. If people do something on computers, chances are someone does it in Emacs and there's a package on MELPA to support it.
Also, the road to Emacs proficiency will be a journey, and you'll want to think about Emacs as something you'll gradually tinker with and tweak to get to a set up and understanding that is satisfying. It's not shiny nor whiz-bang by any means, but path through the learning curve can be extremely rewarding.
Brexiteers have nothing but disdain for the City and finance. They're a know-nothing movement unswayed by economic research and proudly ignorant concerning, among a myriad of hard truths, the realities of operating in the modern global economy.
They think with a simple wave of their plastic sovereignty wand, Britain will be magically restored to some fictional past where a dominant UK thrived in an economic self-sufficiency bubble. No banking sector or stock brokers required.
Also, the road to Emacs proficiency will be a journey, and you'll want to think about Emacs as something you'll gradually tinker with and tweak to get to a set up and understanding that is satisfying. It's not shiny nor whiz-bang by any means, but path through the learning curve can be extremely rewarding.