The first step is to understand the media, which Media Bias/Fact Check and the Ad Fontes Media* are never going to teach you. The only people who are taught it are those who get degrees in marketing, public relations, political science, history, and journalism; and even then only some of them.
The standards are part of RAND’s ongoing project on “truth decay”: a phenomenon that RAND researchers describe as “the diminishing role that facts, data, and analysis play in our political and civic discourse.”
None of it is a secret, though, and it can be learned.