For the sake of creativity, suppose browsers were the wrong direction to take for web exploration. What do we do now?
The same idea may be applied to an operating system's ability to allow a user to operate on their machine.
Edit: It would be useful to consider why the need for a universal interface to the internet was originally sought out.
Douglas Crockford would say The Seif Project: http://seif.place/
Telnet? That's the alternative I can remember.
Gopher!
Of course, there are books and guides to help people, but how would someone figure out which guides are worth it? There are a lot of highly rated books on the topic of web development and if you don't already know what you need, it can be daunting.
But yes, flexbox is great.