The more you play you more features you unlock.
Make sure to read the FAQs as they contain tips and tricks; for instance:
Hope that helps !
July 2016 - last edited July 2016
Well, you cannot actually, not for real. The rewards in the mansion are few, very small, and take long to get (you will need sometimes to work months to get some pity 10 sim-dollars). Before now you could get quite some nice sim-cash from watching ads, but once you reach the level of COM (which is 17th, I think) they stop giving the greens away. Now you can only buy the sim-cash for real money