Has PSI been assigned network 1?

Ah, so you want someone else to do your homework for you?

I believe that the general feeling in the Internet community that it's
essential not only to have such information, but also to be able to
understand the sources from which the information is derived; following
the IETF mailing lists and understanding relevant RFCs is part of what
makes a "good" operator.

The Internet is constantly changing, and in order to keep up, an operator
*must* understand new RFCs and mailing list discussion *as they occur*.

There's no time to wait for some to write a book simplifying things for you...