Play around with it a bit but I would definitely recommend checking out YouTube, a good one is Strictoaster's - Cedar Valley build, it's a bit overwhelming at first but it'll show you what the game can do.
Also with that one, he builds up his skills as he goes and increases mods and assets etc throughout so you can also improve with the videos as you go.
I'm am watching the Arrowhead Junction series now which is a collaboration between Strictoaster and two others, and is a little more advanced - but more relates to my south west American themed desert city.
You don't need to try and be like these guys of course necessarily, it's just worth seeing what you can potentially do if you so desire.