1999 Grizzly 600

Hello all, I am new to this forum stuff, I used one for my truck a while back, and I am not real savvy. But I just got a 99 grizzly and i bought it for almost nothing with the understanding that it needed a clutch. I called my local dealer and asked some questions.
basically the symptoms are: it will drive, but you have to play with the throttle some until it "catches" and then it goes, and then it goes like a raped ape. From a dead stop, it won’t just go once in gear. I was told it’s the clutch, but I watched a few youtube videos and it doesn’t seem real hard to remove, but I learned it has 3 clutches. How do i know which one it is? Someone said to replace all 3, well that’s really not in the budget. And my dealer said that they don’t sell clutches, you have the buy the individual parts and replace the failed part.
Also, one more thing, the idle seems off, too high. I am not sure how to adjust the carb or where to even look to see if it is just the carb or what. I did spray some carb and choke cleaner into the intake as the previous owner said it had been sitting for several months.

I’ll need some more advice down the road, but first things first, I want to get it drivable again.

Thanks in advance!