1) First, register an account: https://www.tytoonline.com/educator-sign-up/
2) Download your Windows or Mac version of the game. The link should have been shown to you after registration, or you can get it at https://tytoonline.com/install
4) When it finishes downloading, you need to install the game:
-- On Windows, double-click the downloaded file and follow the prompts to install.
-- On Mac, drag the file into your Applications folder and double-click to open and install.
5) The Tyto Online Launcher window will appear, where you sign in with your confirmed email address or username and password.
6) The game will then need to do an update since this is your first time playing it, which may take some time to download and update your files to the latest version of the game.
7) Once the update is done, you’ll be able to click to PLAY in the bottom right corner of the Tyto Online Launcher window.
Video on Windows Installation: