Asset Forge allows anyone to create 3D models and 2D sprites using building blocks.
Open source still image camera matching
JSplacement is a cross-platform pseudo-random 8K displacement map generator
Amazing free application to create voxel art.
Free and Amazing HDRi's for quick lightning
Free HDR's for your projects
High Quality HDR's
Learn blender from the blender team
Blender Launch Pad
A great course to get you start your blender journey.
Amazing ebook with a lot of tidbits
Blender 2.8 Beginners Course
Get up and running with the free Blender 2.8 Beginner Course from CGBoost with a HotKey PDF
Monthly based subscription servic with all things Blender and even some Unity
CG Geek Youtube
Pretty random but awesome videos
THE Blender Donut
You will never look at donuts the same way. Seriously this is like 6 hours long but 10/10
Ducky 3D Youtube
Youtube Channel to learn blender mostly focused on Sci-fi Scenes and concepts
Grant Abbitt Youtube
Grant also has really good playlists to get started with blender
Learn Blender the Swedish way; E to extrude, S to Scale
Youtube channel teaching mostly hard surface moddeling
Stylized Characters In Blender 3D
Learn to model, rig, texture, and light appealing 3d characters in Blender 3D.
Amazing free one hour quick start into 3D illustration
The main illustrator course is 10/10 would definitely recommend
Polygon Runway Youtube
Roman also has a lot of videos where he speeds through his illustrations.
Youtube channel teaching a lot about character design and animation.
3D Model Haven
Free and CC0 licensed modals from the creators of HDRIHaven
Library of public domain 3D models.
Community driven free blend files
Models for achieving photorealism
The FLIP Fluids addon is a tool that helps you set up, run, and render liquid simulation effects
A light-manager add-on for Blender with all the HDR's from HDRIHaven
Hard Ops and Boxcutter
The best tool for helping you with hard surface modeling.
Lily Surface Scraper
Import shaders end environments in Blender from a single URL
Aggregator of several free texture sites
Free and CC0 licensed textures
Free PBR textures
Textures for achieving photorealism
Free PBR and CC0 PBR textures
Free and CC0 licensed textures from the creators of HDRIHaven
Over 170 Free PBR CG textures for personal and commercial use