Calibrating your monitor will be a little different depending on what system you are using to edit images. On a Mac access the calibration tools through System Preferences > Display > Color > Calibration. From there, you will open a tool that allows you to calibrate your specific style of monitor. The type of monitor you are using will dictate what settings you will want to be adjusting to create an accurate calibration. If you are using a Windows operating system, you will want to right-click on the desktop, select Display settings and select Color Calibration. The monitor you are using will determine what settings can be calibrated. Certain monitors will come with individualized software that guide you through the calibration process.