Hello everyone, Newbie here. Me and my friends are planning a trip to Europe, but we have no idea what we are doing and this is the reason why I turn to all of you for some help. I will be about 6 friends going. Trip will most likely be the end of November until Mid-December of this year lasting for about 3 weeks. Some questions I have go as follows?!? Consider the fact that we are mostly single guys, who range from 23-25 in ages and it will be first time for all of us.

Where should we land or Fly out to first??
How many places would we be able to cover within Three Weeks?
Which places have good spots for night life(Clubs, Bars, & etc)?
Which places are good for sightseeing?
What are the interesting things we can do while we are at those places?
How much money each person should take with them?
What are dangers and warnings a person should look out for?
Any other precautions to take?

Any kind of help or suggestions are welcome and I thank you all before hand.

AJ