Learn the basics of environment building. Be it for games or animations. At the end of the module you will be creating a stylized environment in blender.
Follow the process in these videos and create one of the stylized environments in Blender.
Water Front in Blender 2.8 - 3D Modeling and Sculpting
80's Hacker Room in Blender 2.8 - Low Poly 3D Modeling Timelapse Tutorial
Cloud Station in Blender 2.8 - Low Poly 3D Modeling Timelapse Tutorial
Futurama in Blender 2.8 - Low Poly 3D Modeling