Creating Human like Character ,Rig, Animate

1- http://www.makehumancommunity.org/

2- Fuse on steam

3- https://www.mixamo.com/#/

PureRef was created to be a simple and lightweight tool for artists to organize and view their reference images.

https://www.pureref.com/about.php

Game Design with Unity Engine

https://www.studytonight.com/game-development-in-2D/introduction