I want to learn Queens Gambit...
1.d4 d5
2.c4


Please post your view on this openning and your advice.

As with most openings, the best way to learn it is to dive in and start playing it. It's stable and relatively positional, so you're not as likely to get clobbered in the opening if you make a mistake as you would with many other openings. Just compare your games afterwards to how grandmasters play to see where you varied from the established theory, and you'll learn as you go.

The one thing I'd want to know before I started playing this, if I was going to, is what to do if black accepts the gambit with 2. ... dxc4. I know white can get the pawn back immediately with 3. Qa4+, but I don't think that's how it's normally played.

--Fromper

This is a solid opening which you really should have some understanding of before you launch into more offbeat stuff against 1.d4

As white, it's one of the fundamental chess openings and you really are at a disadvantage if you don't know it.

Sadler's book "The Queen's Gambit Declined" is an absolutely phenominal book on this opening. Although not comprehensive, it does a great job of TEACHING this opening. (It focuses on four primary variations: Lasker's defense, the Orthodox defense, the Tartakower defense, and the exchange variation. It also has brief chapters on 5.Bf4 and Bxf6. It doesn't, however, cover the Cambridge Springs - which is an unfortunate lapse - or the Tarrasch defense.)

The downside of this opening is that either player can choose to steer the game fairly easily into very passive waters, where experienced players will have trouble competing for the full point. eg, black can play lasker's defense, or white can go for the exchange with Nf3. Inexperienced players will learn a lot about chess from these positions, and it's probably worth playing just for that reason, but at a higher level it can be pretty sterile, if your opponent so chooses.

I learned the Queen's Gambit almost as I soon learning chess.
The Opening appeared in many games of Reshevsky, Capablanca,
Alekhine, Keres and a host of others.
At one time the Queen's Gambit accounted for 1/2 of all Master games
played.
Queen's Gambit Variations/Openings/Lines:
Many players started with the QGA (Queen's Gambit Accepted).
The QGA has transportations to the Caro-Kann. Obviously the Caro-Kann
(Botvinnik-Panov Attack) can lead to the QGA.
The best way to learn the line is look at the games of Euwe-Alekhine Match
in 1937.
To "Learn" an opening see Fine's How to Play the Chess Openings.
Still in print and adequate.
The Orthodox Defence or Defense. (Many old books use the English spelling.
From Znosko-Borovsky's Opening book:
As in the Ruy Lopez Black is quite at liberty to defend passively as his position does not show any weakness. He will hold on to the centre as long as possible and develop his pieces slowly, putting on to White the onus of building up an attack, and himself taking advantage of every exchange to free his own position.
See games by Rubinstein, and Capablanca.
Minority Attack: I learned about the Minority Attack from books by Larry Evans, and at the time won quite a few games in college.
See the game Kotov-Pachman, 1950 at Chessville - Instruction - Novice - Intro to Chess Strategy - Exploiting the Open & Half-Open File - Part II
The best way to learn the QG, and QGA is to go over games, especially with notes. Books available probably in the Library, and still for sale is Rubinstein's Best Games by Kmoch. A whole lot of QG games and those
incredible first rank rook moves which he played against Lasker and Capablanca.
Sites for the QG is Chessgames.com (Mostly GM games and great).
Chesslive.de. You enter the moves, Chessbase locates the games.
The above is an outline of the QG. Let me know if you want:
To go deeper. Planning and Judgement in the QG.
The Czech Defence (Which we call the Slav), a whole other ball game in the QG series. The Exchange Variation.
One bit of advice: Avoid Qa5 lines until you get a feel for the Opening.
Note at one time The Manhattan Variation was popular. So was the Vienna
Variation. Every move in Chess has a name.
As indicated above get the Rubinstein book, and also look at Capablanca's games.

Very nice information!

It really helpes me...

I am a beginner. i am not understanding one thing in QGA that IF black accepted the Gambite then how white uses the c and d line ?

I've tried to play 1. d4 at one time. I learned a lot from that. For instance that I'm not a 'positional type of player'. The QG didn't sit well with me at all. Didn't get to make the moves I wanted to make. Switched to the Blackmar-Diemer for a short time and found out I might as well play 1. e4.

In the QGA [1. d4 d5 2. c4 dxc4], 3 lines come into consideration.
3. Nf3 (a main line)
3. e3 (popular at club level)
3. e4 (a frisky old line)

You're going to be recovering the pawn via e3-Bxc4 mostly. After 3. e3 b5?? is bad for instance...

Queen's Gambit Accepted:
Old and New-
The idea of the Queen's Gambit is that it avoids the cramping situations that often arise for Black. (The Black QB).
Fine recommended the 5th game of the Alekhine - Euwe 1937 Match Game, which gave White a dangerous attack.
Third Move alternatives (Not in the order of popularity):
1. e3 (The idea of 3.Nf3 is to prevent e5 by Black). See the Game
Karpov - Timman Amsterdam, 1991 or Alterman - Wells Groningen, g. 1, 1997. White got an adavantage in both games.
2. Nc3 (See Alterman-Bykhovsky, Israel, 1994.
3. e4 Nc6 See Timman - Lautier, W a Zee 1994.
The 3. Nf3 Nf6 4. e3 e6 5. Bc4 c5 6. 0-0 a6 7. Qe2 b5 8. Bb3 Bb7 9. Rd1 is still played. But Fine gives 9. a4! - A move that has been tried from time to
time. (Jussupow- J. Polgar (Moscow 1994).
Note that each move is logical. Each move has a purpose. To develop
a piece, with the eventual intent of control of the center, and / or mobility of pieces. Moves are not made for the sake of moves.
Go to Chesslive.de and see the games.

1 thing to remember is that you may want to play the Queen's Gambit....but your opponent may not. You will run into things like the King's Indian, Queen's Indian, Nimzo Indian, Grunfeld, Benoni, Benko, The Slav, Semi Slav, The Dutch...... The Queen's Gambit can be positional, but it can just as easily be very tactical. I enjoy playing it.

It is recommended for OTB players whether you are 1400 or 2400 to learn
4 openings. 2 from the White side,and two from the Black side.

GMs are in another category. They learn to play the player.
The QGA or QG are adequate openings. But do not memorize moves without knowing why. (Alekhine)
As to the above: The King's Indian: has a variety of play for White.
The Queen's Indian has its limitations and is subject to attack by White.
The Gruenfeld - White has options for play without knowing the moves.
The Benoni- There are many answers for White. The Slav is no easy play for Black. See the game Botvinnik - Smyslov 1941 for Black's perfect play.
In others never worry about what Black will play.

After 3.e3 I really like the counter gambit from black ...e5! after 4.dxe5 Qxd1 5.Qxd1 b5 black has a queenside majority in an endgame. 3.Nf3 prevents all this and has the added benefit of drawing inexperienced players further into a hopeless try to retain their extra pawn.