I spent considerable time to complete this game, because as a mobile game I play it on and off and never quite pay enough attention. The good thing of a mobile game is that it eats up time when you're bored and have absolutely nothing better to do, like waiting for a bus. I will detail a guide on everything about this game (since no one really have one good enough yet, or even one at all).
First off: ships - all the ships, their stats, their in-game performance, which one to choose, to upgrade and to buy first.