"but the value of the internet cannot be understated. It's a resource that answers any question you may have about programming, about PC internals, or about the business and marketing parts you have to get right."

This

It was not difficult to program in the 80s, 90s. But to get the information you needed, oh wow, that was tough.

In the US it was certainly easier, but unfortunately it's not as easy in some other countries. And yes, there were magazines, etc. Still, some information were very hard to find.