Welcome to the wonderful world of Berners. Having lived with ours now for a little over 3.5 years, I can't imagine having any other breed.
I saw your prior post looking for information on Berners. You probably know all of this now, but you can go to
http://www.bmdca.org/pages/Bernese_Mountain_Dog_Info_Series.php for lots of information about BMDs, ranging from care to activities that they are well suited for.
For what its worth, you might want to start enforcing a no puppy on the furniture rule now while she is still small. Berners cherish their lap time with the owners, and as big a dog and you may not always want her coming up into your lap when you are sitting on the furniture. Ours knows not to get up on us when we are sitting on the furniture. But all bets are off when we sit on the ground.