Where do you find all of these amazing route and trains? I love all of these routes and trains but the problem is it cost so expensive. When i look at the Amtrack Surfliner Content in Steam, it cost so expensive. Is there any best website that i can go to that have free download content for train simulator 2014? 
Most are at the steam store as DLC. The Chinese stuff I have linked to elsewhere in this thread already. Obtaining DLC for free would be a crime, although there is freeware available if you know where to look for it. A good place to start would be the RWA forum, or even a Google search. However, a good amount of freeware is DLC dependent; ie, it requires that you own some DLC for the freeware to be 100% functional. Other than that, yes, I would wait for a steam sale, where you'd be able to pick up what you really want for much cheaper than the normal list price ($20 for new rolling stock, and $40 for new routes).
In other "news," I've been working on modding the EMD F59PHi:
Train Simulator 2014 HD: Amtrak EMD F59PHi Physics Adjustment and Speed Test Along the NEC^Changed mass from 104 to 120 tons to improve adhesion, tweaked dynamic brake curve to more accurately simulate DC dynamic braking; set maximum braking amps to 760 (rating of resistors), and set maximum traction amps to 1500 (limit of the ammeter). Also adjusted fuel capacity down from 4800 gallons to 2000 gallons.
Train Simulator 2014 HD: Amtrak EMD F59PHi Dynamic Brake Adjustments and Tests Along the NEC^Adjusted the dynamic braking so that it would be most effective between 45-35 mph.
