Summarize the following:
Tap the Firefox app icon, which resembles an orange fox on a blue background. It's in the bottom-right corner of the screen. A pop-up menu will appear. You'll find this option in the pop-up menu. It's near the top of the "GENERAL" section of options. Below the "ADDITIONAL CONTENT" heading in the middle of the page, tap the colored switch to the right of each item that you don't want to see on new tabs. If you want to enable an additional content type, tap the white switch to the right of its heading. You'll find this option at the top of the screen; by default, this option is Show your Top Sites. Tap one of the following options to apply it to new tabs in the future: Show a Blank Page - Displays a blank page when you open a new tab. Show your Top Sites - Displays a list of your most frequently visited sites when you open a new tab. Show your Bookmarks - Displays a list of your bookmarked pages when you open a new tab. Show your History - Displays a list of your recently opened pages. Show your Homepage - Displays your Firefox home page. You can change the home page from within Firefox settings. Tap the "Back" button in the upper-left corner of the screen twice, then tap Done. Your new tab settings will be applied.
Open Firefox. Tap . Tap Settings. Tap New Tab. Turn off any additional content that you don't want. Tap the current "NEW TAB" option. Select a tab option. Return to the Firefox main page.