To install ReSharper:
Exit all running Visual Studio instances.
Run the ReSharper installation.
On the first installation page you will be prompted which versions of Visual Studio to install ReSharper into. Choose appropriate versions and proceed with installation.
Launch Visual Studio.
You will be able to evaluate ReSharper for 30 days for free or enter your license data. ReSharper edition will be determined automatically based on your license key.
Develop with pleasure!