Learn about granaries--when and where to build them. This one step can increase your growth rate 20% or more. Practice the early game with various build queues on the same starting position. See how many cities you have by 1000 B. C. (80 turns) and then try something a little different. This will give you an idea of what is effective at the start, and be more useful than someone telling you what works for them.
I favor building the first few (2 or 3) cities very close to the capital. This boosts early production and research and provides an easy to defend core in case of an early war or barbs.
On lower difficulty levels, beginner players have a decent shot at building wonders. On higher difficulty levels, it is usually easier to capture them than build them.
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