I just bought my first pair of skate skis! Do I need to do something before the first ride?

Hei! I have the Salomon skate rs, there is a sticker on the skis saying "remove, brush and ski!".Right. What is expected of me there? What kind of brush? How? (there is no info on Salomon's website, that is bad, boo Salomon).I have been reading up on wax, base prep, sickles, stone grind ... but it still sounds to me like black magic and private ancestral recipes. I am in Oslo and would say of intermediate level, and I could buy some stuff to do it myself but probably below 500 nok 50 EUR 60 $. So, what should I do now? How should I take care of my ski later? (If you do not mind me asking, I would like to know why, additionally to what, I am interested). Thank you it is going to be amazing! via /r/xcountryskiing http://ift.tt/2rjjkPK