Help Black win in the Berlin!!

In the world championship and the ongoning Candidate mactches, we have seen the Berlin defense used.  The main runs into an "early endgame" with the queens exchanged on move 8.  

I know that this position can't be all that bad for black, as GMs win with it frequently, but it seems a tough nut to crack for the average player.  I've found many white players eager to enter this variation because they have done two kiddie tactis they were taught led to success...1.)double your opponenets pawns and 2.) prevent them from castling.

Yet in the right hands, black can still win a stunning endgame from this position.  I want to know how.  What themes should black use?  Since so many white players gleefully stumble down this mainline thinking they have the game in the bag after gaining their two objectives, it would be great to know how to pull the rug out from under them.

And yes, I am aware that maybe it's only an opening for GMs to tackle, but seriosuly, lets say you had to play it, say in a thematic trounament, how should black proceed?

Of all the openings ive ever played, my score with the berlin has been the best. the reason for this is i find its  quite simple for black to play purpouseful moves, while findinging the correct way to break black is quite difficult for white.

It certainly is not an opening just for grandmaster. It probably is even stronger at amateur level because move orders are less important than positional ideas. Most white players have very little idea what is important in the berlin endgame. Personally i scored 5.5 out of 6 in my true berlin endgames against equal or better opposition. 

The main theme in the berlin is the opposite pawn majorities. Blacks slightly cripled queenside majority versus whites slighly bad placed (pawn on e5 is annoying for white it would much rather be on e4) kingside majority. In general the one who handles his majority best wins. 

There are several plans for black to stop whites majority and the activate his own majority (just as ofcourse there are plans for white) and it will go to far to explain these plans here. If you are serious about the berlin there is one very important standard work that explains all plans and endgames. 

http://www.newinchess.com/The_Berlin_Wall-p-1722.html

Thanks!  I will check out that resource.  So would you say the first objective for black is to capitalize on white's weak e5 pawn, and then advance his black pawn majority, or do you think it doesn't matter which order?

No black tries to stop whites pawn majority on the kingside (something made a bit easier because of the white pawn on e5 and the blacks light squared bisshop). And at the same time tries to mobalize his own pawn majority 

The Berlin Wall by Cox is great, and a good suppliment is the Berlin Wall by Chess Stars:

http://www.newinchess.com/The_Berlin_Defence-p-7076.html

I don't have it yet but the reviews are good.  Of course the Beating the Open Games book by Marin is great for those times white doesn't play the Lopez.