I know how to reply after E4 and D4, but what after C4. All I know to prepare for C4 is

 

 

 

 

 

HELP!

1.c4 e5 -  This line leads to active, tactical play. Typically both sides bring out their knights (2.Nc3 Nf6 3.Nf3 Nc6... Four Knights variation) and then either 4.e3 or 4.g3 followed by 4...Bb4 and then the fireworks begin. Warning! If you attempt to attack before bringing out both your knights you are likely to fall into a trap unless you spend some time preparing  your variation.

 

Nf6, usually follows, normally i see e3 and d4 will be played by white at some point to try and take control of the centre so normally I aim to put pressure on d4, with the bishop coming to c5 knight to c6. 

 

 

English has many transpositional potential, so basely White can control which game it will lead to... IMO, typical response is Nf6 or e5... Just beware against it... I find myself slip in the move order and the transpositions...

The kings indian defense can be played against 1c4 and if you like playing black side of qgd you can try 1....e6 followed by 2....d5.  The response 1......c5 is the "real" English I believe? Any English players out there? 

Reb, I play the English. Both 1...c5 (positional) and 1...e5 (tactical) force the game into a mainline English; just about everything else allows transpositions.

The e5 position is like the Sicilian, but played in reversed sides...

Aye, the positions are sometimes very similar, but it's worth pointing out that the philosophies are different. Neil McDonald puts it this way: "When White plays against the Dragon he is looking to keep an advantage, even in a quiet line, whereas in the Dragon Reversed Black is trying to setup a solid position and has no thoughts as of yet of seizing the initiative. The extra tempo, or the lack of it, makes all the difference."

I like playing a system where Black aims to play...e5, Nf6, d5, Nxd5, Nc6, Be6, Be7, 0-0, and f5. 

This system is both active and safe.

I just play 1...Nc6 after 1.c4 and can transpose into many lines that I like

 

 

I like this move: