As a first timer, please could I have some help?

Mainly got into this because I wanted to try out the new isle of man tt sim. went to www.yasdl.com and found it. Installed all of the parts but however I attempt to open them (winrar, then extracting the files (winrar, then using ultraiso, then using the setup.exe within, it always says that it isnt a Freearc archive/it's corrupt) am I missing something major? I don't really understand how to use torrents either. Apologies