To get started with Uplay and to enjoy your game you need to activate the CD key first. Here are the steps you need to follow to activate the key.
You need to have Uplay client already installed on your PC before you start with activation. You can download Uplay client here
After downloading the exe file, run the application to install Uplay.
You need to have an Ubisoft account to log in to Uplay. If you don’t have an account, you can create a new account clicking create a new account or you can visit the following link to create an Ubisoft account out of Uplay.
After successful login you will be taken to Uplay client dashboard. Click on Cog Icon (3 line button).
Select Activate Product from the drop down menu that appears.
And heres how to activate a cd key on UPlay! Simply Enter the CD key you have and click on continue.
Once the key is verified, your game will be activated and bound to Uplay account.
Just visit your Uplay Library and download the game.
UPLAY game activation
After downloading the game you can enjoy a set of Uplay services. Make sure you always maintain a single Uplay account as all games are bound to your account. If you migrate to other machine and wish to reinstall the game you activated using the CD key, you will need to log in to Uplay client on that machine using the same Uplay account.