I would read a couple books about software architecture principles and design patterns (not just the good, but also the bad and the ugly), how to write good tes

I would read a couple books about software architecture principles and design patterns (not just the good, but also the bad and the ugly), how to write good tests, TDD, etc. I remember reading about all this as a teenager and this knowledge (both, which principles to follow and which not to follow) has become invaluable to me over the years.