Check out this extensive list of links leading to exquisite 40k resources.
Ok, so I got this extensive list of various links around the Warhammer 40k RPG topic. All credit to LordFckHelmchen for providing this list!
"The Emperor Protects"
General
- /r/40krpg Subreddit on 40k-related RPGs (contains some useful resources like maps, etc.) 
- DriveThruRPG Online store for RPGs (source for W&G ePubs) 
W&G-specific resources
- Doctors of Doom Best place for W&G resources (Character forge, homebrew rules, threat library, ...) 
- Cicatrix Maledictum A (dead) blog with W&G resources 
- Tabletop to W&G conversion sheet Reddit post with help in converting threats from 8. Edition tabletop codices to W&G v2.1 
- Dungeon Painter Paid tool for map creation 
Maps & Tokens
- HB Token Builder (new version) Character token creator top-down & standing; actively maintained 
- Tangram Open-Source OpenGL Maps with different renderers (live & 3d). Useful for quick map hacks 
- /r/battlemaps Subreddit with (tabletop-focused) maps & related tips & ideas 
Generators
- Donjon Vast collection of very useful generators (names, dungeons, worlds, star systems, dice rolls, ...). 
- scifiideas Collection of (mainly) name generators 
Images
- 40k Gallery A collection of all sorts of 40k images with filters 
- Dataslates A collection of data slates to use for player information 
- Imperial parchment A collection of, guess what, imperially-inspired paper for player information 
- Female 40k chars A forum thread with a collection of female 40k characters 
- A 40k Author Blog of Robbie McNiven, a GW author, with lots of grim dark images 
- IG thread A collection of imperial guard images & fluff 
- Warhammer Art A website to buy fine-art prints, but also useful as inspiration 
- 40k icons GitHub repo with 40k icons as SVG 
Fonts
- Font guidance Reddit post with an in-depth guide for 40k roleplaying material from Black Industries & Fantasy Flight Games; TL;DR: - Requiem for headings (size 28) 
- Aquifer for subheadings (size 10) 
- IM Fell Great Primer Roman for text (size 8) 
- Jellyka Saint-Andrew's Queen for the faded scribbles behind headings (size 34). 
 
- 40k fonts Forum thread discussing Warhammer 40k tabletop fonts 
- Dark Heresy fonts Forum entry on fonts used in the Dark Heresy series 
- Font identifier of myFonts. 
- Latex template for Warhammer 40k (Ork) codices (not actively maintained) 
Wikis
- 1d4chan Best 40k wiki because it takes everything with a grain (or more a ton) of salt 
- Segmentum Obscurus Wiki Small wiki dedicated to the Segmentum Obscurus 
- Heresypedia Small wiki for the FFG RPGs (Dark Heresey, Rogue Trader, Only War, Deathwatch, Black Crusade) 
