2. Windows user
Extract the downloaded zip file to folder. Start the application by double-clicking 4FApp.exe. If you get Windows SmartScreen, press "More info" text and "Run anyway".
2. Mac user
Open the downloaded image file and move the application icon to your desktop. Control-click the app icon, then choose Open from the shortcut menu. Click Open.
2. Linux user
Extract the downloaded zip file and start the application.
3. Follow the instructions
Follow the instructions in the application. They will guide you through the registration process and paying for the subscription. Choose your role in the registration, as either "user", "student", "teacher", or "school administrator", and fill in the relevant information.