Ok first you guys kick ass and thanks for the help, this game was kind of intimading at first but I've started playing it last night and I love it!
Anyways, I'm the Julii factions and have those tree towns. Here are some questions...

1. Why for some towns only a few buildings are available to build? Is it because I don't have enough money? I have two towns on the coast, one west and the other on the east coast. In one turn only the east coast town permitted me to build a port.

2. If I have a port, how do I start naval trades?

3. If I have a rebel army in my terrritory, should I always attack it?

4. In the middle of the screen for each town, under the town tab it shows icons of buildings or roads, does this show what the town has that is already built?

5. I fought a battle and reinforcements came in, I couldn't control those troops. How does the reinforcement formula work? When do you get reinforcements?

6. Here's another dumb question, when do you click end turn? When you used up all of your money to build? Is it good to not spend all of your cash?

7. For troops with missile, is there an ammo indicator?