New Player - Please help with with the Sicilian Defense, Dragon Variation.

Generalizing greatly, many Sicilians boil down to white launching an attack and black preparing a counterattack and taking defensive measures in just the right balance. If he does this successfully and repels the attack intact often the endgames favour black because of a better pawn structure. Obviously this is easier said than done. In the position you posted it's just a normal balanced position, neither side particularly has the advantage yet, unsurprising after only 7 moves each. Usually white goes Qd2 and 0-0-0 and launches kingside pawn storm. Black prepares queenside counterattack with things like a6+b5, Qa5, putting a rook on c8. As you say white is coming first, so black cannot simply race to attack on the other side whilst doing nothing to slow down whites attack. There are many resources available for black to hold the balance, but some lines are very sharp and an inaccurate or ill timed move can be catastrophic. For black sacrificing the exchange RxNc3 is a common theme, as is keeping the kingside lines closed even at material cost.
Actually, it might interest you to know the Dragon isn't played much by the top players any more. It seems when both players know 25 - 30 moves of theory in several lines White does pretty well compared to other Sicilians. However, if you don't have that level of knowledge (I know I don't!) it's a a very dangerous opening to play against and should be respected.