You can manage everything to do with your account here.
To be able to play S.K.I.L.L. you need an account. Then you can log in to the website and check your statistics.
If you already have an account, you can log in here.
Click on the download button to install Gameforge Live. Gameforge Live is Gameforge's online gaming platform and handles the game's download and installation for you.
While you are downloading the game, you can get some useful information: check out what S.K.I.L.L. has to offer or what the first steps are.