Getting a job is simple as you apply at the places that don't look like houses.
It doesn't really matter what job you get they practically pay the same. When 
you start you earn $100 a day that's not a lot if need new furniture. To rank 
up you need to have 'best friend' status with your boss (this will make getting
a raise easier. Go over to there house and scroll down to the option 'ask for 
raise'. They should give you a raise but if they don't they will show you the 
skills you need to rank up.