Is there any Gamers/Nvidia Shield TV owners out there who want to help a noob?

I need some help Bought this Nvidia Shield TV few days ago and I'm trying to get retro games on it and struggling greatly. I have searched for days and tried other forums with no luck watched countless you tube videos over and over I basically need someone who owns one and knows it well to maybe help walk me through it or even just give me some tips tricks or what they may have learned from experience. I know its a long shot on here but I figured take a shot maybe get lucky :/