A popular extension for reduced ad burden and custom filtering is: https://addons.mozilla.org/firefox/addon/ublock-origin/ You can customize the toolbar with the tools you use most, but that obviously is a matter of individual preference. See: [[Customize Firefox controls, buttons and toolbars]]. The built-in Firefox Home / New Tab page can be customized. See: * [[New Tab page in Firefox]] (see "Customize your New Tab page to hide or display content") * [[Customize items on your Firefox New Tab page]] Yes, you can sync bookmarks and ''many'' settings among/between different installations of Firefox. See: [[How do I set up Sync on my computer?]] (There are similar articles for mobile devices.) Some settings do not sync, although there may be a workaround in some cases.