Hello Marko and welcome.
Pretty the same thing that szebus said: resources are harder at the beginning, specially when you are trying to build and improve your wall. After that you will store too much and spend basically with units. For example I have to buy units sometime because my storage doesnt support any more resources hehehe, wich makes easy and faster to build up armies.
You can add me in friend list if you wish, is the same nick as here in the forum. See you there.