Below is a list of helpful links for both new players and veteran game masters!
DnDBeyond – Searchable database and primary hub for D&D character creation:
https://www.dndbeyond.com/
DnDBeyond – Guides for new players:
https://www.dndbeyond.com/tag/new-players-guide
Roll20 – Online virtual tabletop for TTRPGs and searchable database for D&D monster stats, items, spells, etc.:
https://roll20.net/
Thingiverse – Massive free database for 3D printing of minis, terrain, and bits for fantasy and science fiction role-playing games/wargames
https://www.thingiverse.com/
List of Patreons that design 3D minis and terrain – List of Patreons that design 3D printable miniatures for fantasy and science fiction role-playing games/wargames:
https://makerfun3d.com/patreon-game-terrain-miniatures
List of Patreons and vendors that create 2D Battlemaps – List of Patreons that create 2D battlemaps for TTRPGs and wargames. These usually comes in different formats (JPEG, PDF, etc), with and without grids, etc.:
https://www.reddit.com/r/battlemaps/comments/fnellw/battle_map_vendors/
Dungeon Masters Guild – Primary website for purchasing new and alternative D&D 5e adventures, settings, monsters, character classes, archetypes, and backgrounds
https://www.dmsguild.com
DriveThruRPG.com – The largest TTRPG store for both 5e and generic fantasy/SF TTRPGs, papercraft, digital tokens, artwork, adventures, settings, monsters, character classes, archetypes, and backgrounds:
https://www.drivethrurpg.com/
Tetra-Cube –Statblock database and editor:
https://tetra-cube.com/dnd/dnd-statblock.html
RollAdvantage – Digital token creator program:
http://rolladvantage.com/tokenstamp/
AdventureLookup – Searchable database for published DnD adventure modules:
https://adventurelookup.com/adventures
DnD Speak – Random generator and fantastic free source for D100 lists.
https://www.dndspeak.com/
The Homebrewery – Excellent site for creating your own homebrew adventures/documents, as if they had been created by Wizards of the Coasts themselves.
https://homebrewery.naturalcrit.com/
Kanka – Great site for DMs. Helps them keep track of all the details of their campaigns.
https://kanka.io/en
Random combat encounter generators:
Goblinist – http://tools.goblinist.com/5enc
Kassoon – https://www.kassoon.com/dnd/5e/generate-encounter/
NB! The more popular website “Kobold Fight Club” seems broken, and “DnDBeyond” has a wonky generator in Beta that doesn’t actually generate random encounters.
Audio/Music Solutions for DMs:
Watch2Gether – Excellent solution for ambiance in digital games. Everyone can log in and listen to the music (that you select yourselves) at the same time.
https://w2g.tv/?lang=en
Tabletopaudio.com – A great database of ambiance that you can play during sessions
https://tabletopaudio.com/