No electrical power

Hi I just joined the group I have a 2005 Polaris predator 500 I was riding yesterday and it was working great I let a friend ride it and it was fine now I go to fire it up and there’s no power… Battery cables are tight the battery is not even a year old if I hook power cables to it I can get lights but it won’t start… Where do I go from here? I’ve been reading and people are saying check the fuses but where are they located? Is this a common issue? Thanks