Here is a trap for white in the Queen's Gambit accepted version caused by a bad move by black.
The Queen's Gambit accepted is not very popular, most people play the declined version.
This is just a trap in the accepted version that i thought was interesting. I think it is normally a lot better for white if Black accepts because when white regains the pawn then he has a stronger centre with the d and e pawns. Playing c6 as black is a big mistake, so beginners who play against the queen's gambit: 1. decline it. and 2. if you decline it, don't try to hold on to it by playing b5 then c6.