Im developing an app that brings the user a quick list of \"info\" items but i want to set an options so that he receives this items as notifications when he is leaving home
Well Google Now is using a complex algorithm as does Waze. You will also notice that Google Now will ask you if a location is important after a while. Its looking at places where the user spends a lot of time frequently. One of those will certainly be home and the other will certainly be work. Just ask for cheap location in 4.2 and see where the user trends.