So as you may know one of the main points of mafia wars just like in real life is to get as much money as you can. The more jobs you complete, the more money you can make. When you have more money, you can buy more property and have the properties earn you even more money. So in the beginning, I used a mafia wars strategy of completing jobs that takes the least amount of energy but gives me the most amount of money. The more energy you have available allows you to complete more jobs at the same time so it is important to do the jobs that take the least amount of energy first. Once you gain more energy you can complete the lower energy jobs multiple times at once so that you can increase your levels and get better mafia wars jobs. Also, once you have mastered the job, you will get more skill points that you can use towards gaining more energy.
After I finished a level, I can divide the skill points between my health, stamina, attack, defense and energy. I put 80% of my points into my energy so that I can do more jobs at the same time and earn more money. This strategy worked for a while until I started to gain a lot of money and bought a lot of properties. That attracted rival mafias and they were starting to attack me and my property. I knew at that time I needed to build up my mafia and defend my property.