from the main menu choose the used car yard to start a new game or the parking garage to resume your saved game. You will then enter your safe house. the exit door quits the game, the bed saves your current game and the computer is used to do various things including checking your emails to accept jobs.
Upon selecting a job you must use the direction keys (w,a,s,d) to evade the police and reach your destination(s). the red dotted gps path leads to your main objective and the yellow leads to the next available side objective. (where applicable)
completing jobs will gain you money and reputation and open up new job opportunities.