1. One worker per city rule. Every worker in those cities should be able to work on improved tiles. 2. Stone Works, Halicarnasus. Use trade routes for production in cities with less than 8 pop. 3. Unless you have a good reason for keeping some forests, chopp them ASAP. 4. Invest gold in buildings from your weakest cities. 5. Use religion. Now that you know the weaknesses of secondary cities, choose your pantheon and beliefs wisely. Passive beliefs work better for small empires. 6. If you plan on staying small, your cities can be very populated. Prioritize food, then specialist slots and production.