A variety of tools are available to determine which files and folders use the most space on your computer. Windows users may use WizTree, which looks as follows:
To download and run WizTree, visit this site, click “Download Portable,” unzip the resultant folder, and launch WizTree64.exe. To scan the selected hard drive, simply press “Scan.”
WizTree is a fairly intuitive tool with which users are encouraged to experiment.