Click the Accept and install button, and your Windows 10 PC will be upgraded to Windows 11. You should be able to use your PC during the download and installation. When the process is finished, ...
Windows 11 has a built-in report that provides insight into your laptop's battery health (and whether a replacement is needed).
Disk Cleanup is another utility that is accessible regardless of your Windows version. The easiest way to open it is to search for "Disk Cleanup" in the search bar and bring up the window.