Rookie taming method (worked first time):
1. Craft a larg bear trap (and about 15 tranq arrows)
2. Find a carno out In the open and easy to see/fire at
3.get carno to aggro on you (somehow) and walk into the trap
4. Tranq it quickly before it breaks out
I recommend, if u don’t have a spyglass, to get enough arrows for a 150. Just in case the Carno you have your eye on happens to be that. I tamed a lvl 60 but outrunning it with my raptor and shooting it with arrows. Its not easy, but it gets the job done without having to build traps and stuff like that. You can just bear trap it and knock it that way.