Crossmax and other Mavic tubeless rims conform the the UST (Universal Systeme Tubeless (its French)) standard and don't need tape just magic valves. They are designed to work with UST compatible tyres and don't need rim strips or sealant. Sealant is however commonly used because it will seal any thorn type punctures.
Stans rims and others (DT, Bontrager) are often tubeless ready and will usually work fine with any tyre (tubeless) you will need Stans yellow tape (google it) and a stand valve together with sealant and maybe some perseverance. The are loads of videos for going tubeless (watch them).
Some tyre and rim combinations won't work or won't work very well. Luck? Or ask.
Tubeless does give you a lower weight, better feel (arguable), improved puncture resistance. Some can get away with running low pressure but don't go too low or you will be smashing your rim!
You can fix bigger punctures on the trail with tubeless specific kits try Panaracer or Weldtite (worms). Again (google & eBay).
That is all I have to say.