As you know, in the last years people are increasingly enrolling in C1, but many of them don't really know what it is asked for at this level.
For many it's a continuation of level B2, but once you start you'll realise there's a big jump between one and the other. Therefore, from the very beginning of the year I believe it convenient for you to get acquainted with what C1 level really means.
With this purpose in mind I've selected this information from the Common European Framework, which perfectly sets the objectives in the different skills.
Now that you know what we have ahead this year... pull your socks and get down to work! :)