Yes, after (atleast) befriending someone, it should be on the main chat list if not in 'actions'.
You have to invite him or her to your house and find the ask to move in option when you click on them
You have to be a best friend or couple then when you talk to them you scroll down on actions then on actions there is a option saying move in. And they move in!! :)
I don't think you can, but they can move in with you if you are partners or best friends.
Move your sims into a house they can afford. (sims 2 PC) use the cheat 'motherlode' or 'kaching' and you will get money, move them out then move them into the desired house ;)
Build a ?House from Torajiro and put it anywhere. (It depends where you put it for who will move in.)
click on the phone then click move house
have them go on the computer or call and select move out.
when they move out, they will enter The Clipboard (the place where the Sims are kept after you've made them but before you move them into a house. From there, you can move them into a new lot to play them.
use the computer or newspaper to find a new house.
You could move the house with the family in it to the houses bin then put the house in a new town but if you do this the family cannot move out of that house whilst in the new town. hope that helped
Yes they can.
Do you have to complete goals? If so, then complete all of them to move on to the next level and move out!