It takes weeks of grinding and playing to be able to earn trillions of credits. You cant just suddenly get that powerful just by donating real life money.... well you could if you wanted to make Emi extremely rich!!
If your new, just use this round to experiment and work out how to play and design etc, then you'll be more ready for the new round.
On the main server to get going you've just got to do as many encryptions as you can find, incursion aliens and then Encounters and some missions. Patience is the game here!!
On the wars server then thats harder, it will take a very long time to be able to earn enough to get anywhere near the top players.
I must be stupid for I have played this game, on and off, for more than weeks, and yet, I don't have trillions of credits in my account.
And I just got all my fleet wiped off by someone even more powerful.