Money in Gangta is in the form of Great British Pounds (GBP). This is true for all cities and makes it easier to manage your money across multiple locations.
How do i get money?
To gain money you have to perform robberies. Different robberies gain you different amounts of money.
You can also boost cars and then sell them on to make a quick profit.
There is a job centre for your first few levels in the game that will get you a steady stream of income without any risks however the amount will be very low compared to the criminal actions.
Join a gang and ask on their forums for some help getting started. If your lucky they may have a newcomer programme that helps new players learn the game.