no
You cant
buy a house
You can't.
You don't have a job in the game only at the beginning. Then you do whatever you want
when you start the game you have to finish your job and then go to the city and you will find shampoodle
Nook gives you a part time job once you have chosen your house but that is all the jobs you get!
No you cant
use cheat code JOB
maybe if you are one of the bigheaded freaks on the game
The only time you have a job is when Nook gives you a part time job at the beginning of the game. If you want to make money you'll have to sell fruit, fish and insects.
you go back
Not really, you just ask for favors and search for "bells" and you'll get a lot of $$$ quickly.