This Zine is about the most popular web authentication and authorization methods, also flows/grants which I feel should be easy to understand as well.
There is plenty of information available on various sites for each of the topics that I discuss here but I have made a small attempt to make it organised and uncomplicated.
I have covered: Basic Auth, Session based and Token based methods, A tour of JWT tokens, and OAuth2.0 all 4 grants for Authorization.