Welcome to the 2D Game Design in Unity tutorial series. This first video in the series explains how to download the Unity software and set up your first 2D game project. You can download the Unity software from here and get started for free. This tutorial includes a step-by-step video (scroll down to watch).
After downloading and installing the Unity software on Mac or Windows, you can open Unity and create a new project.
When you create a new project you will see something like the screen shown below. The main parts of the screen are the Hierarchy (which lists all the objects in the current game scene), the Scene window (where you can design the game world and place objects in your game), the Inspector panel (where you can edit the properties of objects in the current scene), and the Project panel (where you can add assets to use in your game project).
Watch the video below for instructions on how to download and install Unity and begin creating your first 2D game project in Unity.
Next tutorial: Adding assets to your 2D game