The goal "funny cats video": buy a computer and click on it, there should be an option called "watch funny cats video" click on that and wait, goal is completed!
The goal "buy a 3 star rated bed": if you go to the store and to the beds you will see that it is blue stars on each bed, just pick a bed with 3 stars. For example a black bed with a heart on
Make 2 sims move in together: be romantic to another sim a lot of times! The sims will first "budding romance" and if you keep be romantic they will "date" and if you be romantic about 6 times more they will be "partners" after that you can pick "move in together" insted of "be romantic".
Good luck and im sorry for my bad english ;)