What do you mean by make them young?
No.
no, i don't think so...for the sims 2 there was this object you could download and make your sims young again but i don't think anything like that has been made for the sims 3.yet.
I belive you need to by it then make an account yes.
You cant make teenagers preagnant on the sims 3,only the young adults and up can make love and have a baby.
Speed up the game
If you mean on Sims 2 then you have to have the University expansion pack, then make a teen Sim go to college and they will turn into a young adult Sim. If it's on Sims 3, then I am not sure, sorry.
There are 3 slots to make a sim but you can adopt a pet from the park or be close enogh friends with a sims to allow him\her to move in your household to make a total of at least 4 sims in your household.
Well we will later on make Sims 4, Sims 5, Sims 6, Sims 7 and so on. We can not tell you what we are going to change because that will spoil the big surprise for everyone!!
Yes, young adults are permitted to date adult Sims as well as elder Sims.
Once you make the young adult and adult and save them to the clipboard you can go to edit relationships when your sims are sitting on the couch before you move them into a home. Put the two sims pictures next to each other after you click edit relationships and click spouse of.
No. Only Young Adults and above can be pregnant and eventually have babies.
No, The Sims Medieval is not The Sims 4, it is a stand-alone game.