Blender is a powerful open-source software package for 3d modelling for video games and animated movies.
Being open-source means that it is free to download and use on your own devices.
From SRCoder. Very basic tutorial for object mode modelling. A good place to start.
Blender 2.8 Shortcuts
Low Poly Animals
Realistic Hammer
Default Cube Owl
RPG graphics - Humanoid
A series of videos that gets progressively harder that challenges you to make something by yourself before learning how he did it.
Exporting From Blender 2.8 to Unity3d
Year 11
At this stage it is highly discouraged to use texturing, animation and sculpting
Year 12
Begin texturing, animating, and sculpting
Year 13
GO NUTS!