Wurdtoyer,
there's some info that is needed to best help you. Are you playing Dread Lords, Dark Avatar, or Twilight?
So take this with a grain of salt, but this is a very basic starting point for DL and DA.
Race stats/abilities
Terrans DL
Morale +10
Research +10
Trade +25
Diplomacy +25
Hit Points +10%
Trade Routes +1
Logistics +6
3 remaining customization points
Suggestions: De-select Hit Points, Research, and Trade Routes in the Ability Menu (adds 6 ability points for a total of 9). Select 30% Econ, 30% Pop. Growth, and 20% Morale. Go with Federalist Party (+20% Econ). This set up will give you enough economic power to compete with the AI. Use your Diplomacy to stay out of war or to start wars among the AI (if they're busy with each other, they'll avoid you).
Terrans DA
Morale +10
Research +10
Trade +25
Diplomacy +25
Trade Routes +1
Logistics +6
10 remaining customization points
Suggestions: Put 4pts in Economics (+30), 1 in Morale (+10, for 20 total), 1 in Luck (better anomalies and changes attack dynamic to your benefit), 4 in Mil. Production (+50)
Select Federalists.
Again use your Diplomacy skill, now coupled with Super Diplomat, to stay out of war and to get what you want from the AI such as ships, money, and technology.
Starting Out
Turn One
Just close the research screen when it opens, you'll be back to it in just a moment.
Once HW screen opens, check over your bonus tiles. This will dictate your early moves. If you have a bonus tile that is greater than 100% (such as a Precursor Mine/Library or the 200/300 tiles) but NOT a farm/morale/influence tile then go ahead and rush buy on the lowest base cost that structure.
Close the HW world screen and open up the Domestic screen. Set your industrial capacity to 100% and your taxes as high as you can that you still have at least 80% morale (prolly around 35-45%).
Open up the Research Screen. Select either Adv. Propulsion techniques, Universal Translator, Xeno Research, or Galactic Warfare.
use Colony ship to colonize secondary system world, unless a higher PQ is DIRECTLY visible in your line of sight (don't go searching for one, but if you can see it right away, just grab it). Send your Survey Ship on auto-explore. Set Space Miner on auto-mining. Make sure your asteroids are supplying your HW not your secondary.
End Turn One.
Don't rush buy your ships, or, if you are, make sure you Lease them. Even with a 33% production slider, with the 50% (60% with Gal Warfare) mil prod. bonus you should be able to kick out a colony ship ever few turns.
Also, suggest getting the Sensor tech early so that you can send out more Survey Ships. More survey ships means more anomalies, and more anomalies means more money, tech, and various bonuses.
All in all, rush buying vs building depends on what kind of game you are playing and what difficulty level. In my longer Gigantic map games, I hardly rush buy anything early in the game because I don't have to worry about meeting the AI that soon. In my 0yr games I rush buy every single item (both ships and buildings) but I suffer massive debt because of it too.
Go ahead and start a game and post updates roughly every 12 turns. That way we can see what you are doing and give you pointers as you go along.
Best of luck mate!