Aight, this is how to open rar files....
First download a rar file of your choice (I'm not providing one).
Second install WinRAR from rarlabs.com in the language of your choice.
Third Right click the RAR file and click extract (here, to, into; your choice).
Wow, you just opened a RAR file. Good job, now have fun opening "stuff" !!!!!!!!!!!!!!!!!!!!