Hi Fabien, welcome to the Linux Mint forums
Cinnamon sure is great!
Be sure also to check out the Community
website (ideas, tutorials, and hardware and software reviews). And check out the Cinnamon Extras
package, which will install a lot of Cinnamon themes, applets and extensions for your automatically.
You can also chat in real-time with other Linux Mint users. In the Mint Menu, in the Internet section, start the application XChat IRC. You will automatically get connected to #linuxmint-chat for general chat and #linuxmint-help for support with other Linux Mint users.