Here is a wonderful thread to check out. It talks about
Game Questions. Lots of helpful info.
There are codes for certain collectibles, mostly furniture and buddies. Be sure to check
this out, and other codes threads. All the current codes have all been released, and I doubt there will be any in the near future.
To help you get around the house Sparky has done an AWESOME job with
maps and where items are in each room (like you need to turn off fans, but which rooms have fans?) and the Adventures and where friends are
located. Just scroll up and down either link for all the info you'll need.
Once you finish all the Adventures from one "month" then the characters will move to a previous month. The game isn't always updated at the beginning of the month, but it's easiest to call it the Aug Update or Sept Update. Sparky's list will help you figure out where people are based on which update you're on and you can figure that out by the Adventures you are on.
Hope that helps!
~Vicks