Disney Plus is one of the most popular streaming services in the world right now. So, let's start with the basics: Start streaming Disneyplus.com/begin on your Amazon Fire TV, from the Home screen, go to Apps. Firestick Home page .Open the Disney Plus app and log in to your Disney Plus account. Then, you will receive a unique number. Go to Disneyplus.com login/begin URL. Enter the 8-digit number to activate the account. Click 'Continue', to complete process.