carb carburetor

Hi everyone, I need to adjust the carburetor on my Warrior but I don't know exactly how to do it. I know there is a fuel/air mixture screw and a idle screw. I appreciate if anyone could give me some steps to do it. Thank you everyone!!

I got a free 03 warrior from my girlfriends uncle, he moved away and it's been sittin in his dad's yard for 3 years and hasn't been started or anything. it just sit out there to rot but anyways everything seemed fine except the carb and while I had it apart my cuz ran by and stepped on it...