So to understand RFC A I need to understand Section X from RFC B which implies that you know RFC C which has been obsoleted by an obsoleted RFC.

I love it

I was just going to sign up for a new ISP when they asked for my email. But they managed to screw up the email form validation by only allowing domains with the tld comprising of two or three characters! My email address ends with “.blog” so had to use my university email 😠
Please follow the RFC

I want to learn about the most important network protocols (HTTP 1/1.1/2, SSH, IMAP, SMTP, IMAP...) but reading the RFCs is extremely time consuming and probably not necessary for someone which doesn't need to implement these protocol.
Do you know more concise resources where I can learn more about the topic?