1.c4 e5 makes the game a Reversed Sicilian. White is playing the Sicilian, just with the first move. You have two main options on your second move. It's a toss up between 2.Nc3 and 2.g3. These may well transpose as your opening moves do not depend too much on a specific move order.
Black can build a center and it will be up to you to make an impression on the flanks. In many lines you will castle Kingside behind a fianchettoed Bishop. This Bishop is sometimes called the English Bishop.
His considerable pressure along the long diagonal is an important feature of this opening. Your Knights will dodge and weave through enemy lines looking for good outposts.
Your Rooks will slide across to the Queenside to support your minority attack there and to take command of open files. You will be playing for key pawn breaks on the b-file, c-file or sometimes the f-file.