https://dnd.wizards.com/
Wizards of the Coast official website

https://www.dndbeyond.com/
Online character creation, etc.

https://www.dndbeyond.com/sources/basic-rules
Condensed version of the Players Handbook (free)

https://www.drivethrurpg.com/
Purchase PDFS of campaigns and other materials

https://www.excelsiorcomicsandgames.com/
Maynard game shop that hosts Adventurers League

https://warhorn.net/
Online sign-up for Adventurers League (nationwide)

https://critrole.com/
Professional voice actors (Critical Role) play D&D (streaming and podcast)

https://www.maximumfun.org/shows/adventure-zone
3 brothers and their father (comical podcast)