Early game space miner
As most of you know, you can upgrade the space miner to a colony ship for 66 gold.
Before I do that, I improve the 3 local asteroids. Thats basically production bonus with no upkeep. Meanwhile, I grow the population. (with 100% morale).
I also design cheap Colony ships (the module and maybe a life support or two), Constructors, Miners, and even Freighters. When I get Small ships, I design small versions. With 2 levels of miniaturization, tiny versions can be made. Engines are expensive for a 1 use ship.
I control the flag ship manually at first. An early wormhole could prove to be disaster for a growing empire. (The ship cannot survey until back in range.) Once I have researched Sensors and can make my own Survey ship, I don't worry about it so much.
Once combat starts, I consider upgrading my survey ship. If you are lucky, it may have accumulated lots of hit points and experience in it's early travels.
Also, be aware that you can rename almost anything, starbases, rally points, planets, ships and fleets. This can be very helpful in large galaxies. Consider 2 or 3 names for constructors. (depending on what part of your empire is building them) Then you can use the Civilization Governor to redirect them. (or just move the rally point)
Sorry, if this is redundant. There is alot of good information in this section - especially TA101 and the Economy threads.