"How to install RDi"
Installing has details on the various steps to install, uninstall, and update RDi.
There are also videos available to show install on Windows, and install on macOS.
How to get the Activation Kit to license RDi
To activate your license you can follow the steps as described here:
You will need an activation kit.
There is a video showing activating the product.
If you ordered authorized user licenses, the activation kit is available through the software channel (Passport Advantage) or the hardware channel (ESS/AAS).
If you ordered floating (flex) licenses, you can get a copy of your activation kit from the Rational License Key Center (RLKC).