Users transitioning to Windows 11 can realign the Start menu to the left by opening the Settings menu (Windows + I), searching for Taskbar Settings, scrolling to the Taskbar Behavior section, and selecting Left under Taskbar Alignment. To disable search trends and news teasers in the Start menu, navigate to Privacy and Security in Settings, select Search Permissions, then More Settings, and disable the Show Search Highlights option. Users can change the default browser by going to Apps in Settings, selecting Default Apps, and choosing their preferred browser from the list.