How can I free up some disk space on my Windows 10 PC?

Andy's PC has less storage space on an almost daily basis and he would like to get some of it back "

I frequently use the Disk Cleanup facility in Windows 10, but the amount of disk space taken up increases almost on a daily basis. Despite upgrading to Windows 10, Disk Cleanup still refers to disk space on Windows8_OS[C]. Is this the problem? Also, 3GB is Temporary Internet files, but deleting Temporary Files in Storage makes little or no difference. Andy

Before we start, I must remind you that you are totally responsible for your own PC and all your personal data. If you are going to run programs that delete files, or worse, you must have everything securely backed up first. Windows 10 includes a backup program that can back up your hard drive and also take a disk image. It's also a good idea to create recovery media and to make separate copies of irreplaceable data files and family photos.