Alliance are a serie of different mods. On the Star Wars GC, you can play the civil war Empire vs Rebel era + Black Sun and soon the Republic and CIS.
I have released at Steam the official playing guide from the FOC Alliance. It is a guide from the 8.0X and the new versions coming after it. But it shares most of all with the 7.63X and other previous versions.
You can find it here. Steamcommunity.com
The guide will grow with the past of the time with new content.
Remember you can check all units from the mod in the complete Encyclopedia at Firefoxccmods.com