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. AndyBefore we start, I must remin