Try one of these articles:
- How do Tiles work? Tiles help new Firefox users discover interesting pages, and allow existing users to access their frequently and recently visited sites more easily.
- New Tab Page – show, hide and customize top sites Learn how to customize your New Tab page by pinning or rearranging your Tiles. You can even turn them off if you wish.
- Firefox's default home page has quick links to common features The Firefox home page contains a handy web search and quick links to downloads, bookmarks, history, add-ons, sync and settings.
- Pinned Tabs - keep favorite websites open and just a click away Pinned Tabs (or App Tabs) allow you to keep your favorite web apps, like Facebook and Gmail, open and just a click away. This article explains how to use them.