WINRAR is a popular compression tool with a friendly interface, easy to use, and performs well in terms of compression rate and speed. It has a high compression ratio. 3.x adopts more advanced compression algorithms and is one of the formats with higher compression rate and faster compression speed. WinRAR can decompress most compressed formats, and can directly create compressed files in ZIP format, without the support of plug-in programs, so we don't have to worry about how WinZIP handles the ZIP format. This program is a basic tutorial for WinRAR.