Start With The Problem You Need To Solve
Use the guide closest to your current task, then follow related pages when the issue crosses domains, DNS, email, WordPress or migration.
Domain Transfer Vs DNS Change
Know when you need to move a registrar and when you only need to point DNS to new hosting.
How To Transfer A Domain Safely
Prepare contact details, locks, authorization and DNS before moving a domain between registrars.
Domain Privacy: What It Does And Does Not Do
Understand registration privacy, public registration data and why domain privacy is separate from website security.