A lot of people use winRAR when they need to work with archives. However, if winRAR is not the best option for you, you can try other programs that extract .RAR files.
This video presents one of those programs, called ExtractNow, a completely free and useful program.
This great how-to video will give you a useful link to download ExtractNow. It will also teach you how to properly use it whenever you need to extract some .RAR files! Good luck!