Game guides

I though this might be a pretty important topic to fill in, some info was taken from the guild page and some other from the small fleet doctrine page

Defences
When playing astro empires, defences are paramount, a good set of defences are as follows:
10/10 Prings or more, (1 level of structure is equivalent to 5/5 Prings)
5/5 Pshields or more, (same as Prings)
10-20 Command Centers
2 or more level jumpgate
2 Dreadnoughts
10,000 Fighters

Fighter Drops Use the 1/2/4/6 Rule
The 1/2/4/6 Rule provides a guide for how many Fighters you need to cleanse your enemy's fleet of escort units. The numbers represent the following assumptions:

1 FT per enemy FT/BO/RC/SS
2 FT per enemy CV/HB
4 FTs per enemy DE
6 FTs per enemy FR
Remember that the presence of other ships will destroy some of your Fighters. So, provide a few extra Fighters to absorb the extra damage. What we need here is a percentage to figure the FTs that will bleed off.

Heavy Bombers Use the 3.5/8.5 Rule
The 3.5/8.5 rule provides estimates for using Heavy Bombers against Cruisers and Heavy Cruisers. The numbers represent the following assumptions:

3.5 per enemy CR/CA
8.5 per ememy HC
Cruisers and Heavy Cruisers
Cruisers yield about a 10:6 ratio against Dreadnaughts. You need about 130 Cruisers to kill a Dreadnought. Twenty HCs will take out a Dreadnought, but with a 9:8 ratio. This is less efficient. So, bring the extra Cruisers.

Heavy Cruisers yield a 2:1 kill ratio against Titans. However, you need 130 HCs per Titan. Bring your HCs after the Fighter and Heavy Bomber waves. You will need about 800 HCs to kill a Leviathan, for a 2:1 ratio.