There is no tutorial (that I've found so far exept the one on description) so here is my attempt to make one

New Buildings
Buildings are devided into 3 categories. Tracks (Railroads), Trains and Stations. Each have diferent purpose.

Tracks
They are only a decorative items. Trains cannot move on them, and they are there only to make it look nice. You can place them on top of each other to make crossings and switches. You also have 3 types of bridges and one type of tunel.

Stations
This is where you sell goods. There are 4 types - Food, Textile, Utility and Material. Goods are sold automatically by workers. To get coins you need one log, one piece of coal and enough goods (specyfied in a drop list, simmilar to that one in blacksmith). For each transaction you'll get 600 coins.
Unfortunatelly not every station has production limit in it, those that have however don't have them explained correctly. Coins are under Dry Goods category.

Trains
Those serve a few purposes.
Engines is where you buy goods using coins (prices and quantities are in a drop list) until you get to your production limit.
Cabooze Wagon acts like a house.
Passanger Wagon attract nomads to city.
Food, Material and Goods Wagons are surving as storage places for each of 3 types of material.
Last but not least is the Hand Card. It only have a decorative purpose

Removing tracks
In order to remove a piece of track you need to clikc on it and click on a bin icon. The remove tool does not work on them.