For more in-depth tutorials, you can refer to the comprehensive REW Video Guides at AV NIRVANA .
Since this is a .rar file, you will need a utility like WinRAR or 7-Zip to open it. Typical contents for REW-related archives include: EWQEQW.rar
Calibration ensures your measurements are accurate by accounting for the inherent bias of your hardware. For more in-depth tutorials, you can refer to