The fastest way I have found to get simoleons is to plant strawberries and harvest them as fast as you can (the faster you harvest them the more money you get) each time you harvest strawverres you get 40 simoleons. Also another way to make extra money is if you sim is inspired (you make you sim inspired by meeting all their needs) A good way to get your sim to raise their social to green is to visit bella and let your sim do as they please, eventually they will talk to bella anfd raise the button to green without you waisting any energy. After you fulfill your social needs go back home and fulfill all the other needs until they all reach green. Then use energy to do tasks (you can make up to 12 extra simoleos when doing tasks when inspired)