u/Infinite-Complex5713

I need to go from North New Jersey to Eddington but it's so confusing. I downloaded the app and I can't just buy a ticket like I can on nj transit...also you can't do contactless payment at trenton apparently...and you need to register a septa key which needs to be bought in person but the trenton station isn't a location for buying...and there are zones and "SEPTA tickets sold by NJ Transit include an intermediate ticket valid on a branch for travel between New Jersey towards but not entering the CCP zone" like what is this???