Assuming you would like to watch The CW network on your television:
If you have a TV that was manufactured after 2007, it likely has a digital tuner. This will allow you to watch digital channels without needing a cable box. If your TV does not have a digital tuner, you can still watch The CW by connecting it to a digital converter box. Once you have the proper equipment, simply tune to your local CW affiliate station.
In some areas, The CW is offered as part of a basic cable package. In others, however, you may need to subscribe to a higher-tier package or purchase a la carte in order to get The CW. Check with your service provider for more information.