Dragon

Can anybody explain the difference between the dragon and the accelerated dragon.  Which is better for black as an opening

Here's a decent thread:

http://www.chess.com/forum/view/chess-openings/ideas-in-the-accelerated-dragon

As to which is better?  You're a diamond member with access to the videos and there are multipart video series on both.  IM Keaton Kierwa has one on the dragon and GM Melik Khachiyan has another 10 part monster on the accelerated dragon.  Check 'em out.

Thanks for the advice chaps.  Greatly appreciated

There's no better or worse. The Accelerated Dragon is rock solid and a fine drawing weapon, while the non accelerated one is one of she sharpest and riskiest openings you can play. 

I think the lazy turtle is deadly :)