I use my bicycle basically everyday except for two months in the winter. Before it was parked for these two months I cleaned it. And before I started again I oiled the chain.
Brakes need no service at all neither changing

Just tightening the cable and that is piss easy.
The tyres are in good condition so far, I just pump them. In one year I had one puncture where I (they did it because I have two years free service) changed the tube.