Goat Simulator 3

There are a total of 200 trinkets (little golden statuettes) scattered around the entire map. Each area is broken up separately in the Collectibles menu, allowing you to easily see how many and which collectibles you've obtained in each area.

Before attempting to collect all the trinkets, I highly, highly recommend that you do the ramps first (see Daredevil (30G)) to unlock the daredevil helmet. Also grab the glider if you don't have it already. It's right by the Murwood Falls Goat Tower. With both of these equipped, you can press  over and over to travel very quickly but also to ascend (albeit a bit slowly) higher and higher in the air. This combination is extremely convenient for moving around the map quickly and also getting to heights that would otherwise take some work. 

Below are videos for each of the regions in the game. Full credit to Trophy Tom for putting these awesome videos together. As he notes in the beginning of each, they're in the same order as the collectibles in the Collectible menu, so if you already found some you can easily see which you have and can therefore skip over in the videos. 

Fairmeadow Ranch

Brumehill Cemetary

Pointy Foods Factory

Suburbsville

Construction Site

Mornwood Falls

Sawmill

San Angora Zoo

Hoofer Dam

Downtown

Libertarian Island

Goatenburg