For questions relating to the Dragon, a variation of the Sicilian defence.
The line goes: 1. e4 c5 2. Nf3 d6 3. d4 exd4 4. Nxd4 Nf6 5. Nc3 g6.
Black aims to fianchetto on the kingside. The opening is named so because the pawn structure bears a resemblance to the constellation Draco.
White has many options. The Nottingham Variation is where White aims to control the d5-square. The main setup happens after Nd4-b3. The Levenfish Attack happens after f2-f4 and then Qe1. He may also castle queenside, and start a pawn storm.