I've seen this '50/30/20 rule' recommend before, in the UK press (financial articles) and by banks [1] and financial resources.
I'm interested in it's origin, whether it still holds true today (is the advice still valid) and alternatives strategies for comparison (given today's current economical climate, rising inflation and interest rates).
Lots of so called challenger banks offer virtual cards which can be used with merchants you do not trust, thus mitigating the risk of them having your ACTUAL card number which they can abuse/leak.
Can anyone recommend some good blog articles or books (aimed at lay people) on how the global economy works, bank interactions with other banks, and government management of inflation and interest rates?
I'd like to understand a bit about both the previous crash and the current banking crisis, but feel I need to do some background reading first.