To begin watching disneyplus.com login/begin activation on your PS4, follow these simple steps:

1. Ensure that your PS4 is connected to the internet and turned on.

2. From the PS4 home screen, go to the PlayStation Store.

3. Use the search function to find the Disney Plus app. You can either type "Disney Plus" or browse through the app section.

4. Once you locate the app, select it and click on the "Download" button.

5. After the app finishes downloading and installing, return to the PS4 home screen.

6. Look for the Disney Plus app icon and launch it.

7. When the app opens, you will be prompted to sign in or create a new account.

8. If you already have a Disney Plus account, enter your login credentials.

9. If you don't have an account, you can create one directly within the app by following the provided instructions.

10. After signing in or creating an account, you can start exploring the Disney Plus library and enjoy your favorite movies, shows, and exclusive content.

Remember to have your disneyplus.com login/begin url subscription ready to access all the amazing content available on the platform. Happy streaming on your PS4.