I actually learnt a lot from the ground up from first principles, which I was lucky to had time for back in the days (like SQL and markup etc.). Unlike today, w

I actually learnt a lot from the ground up from first principles, which I was lucky to had time for back in the days (like SQL and markup etc.). Unlike today, where everything has to be completed by the end of the day in agile fashion, where I hastily copy/paste from SO.