Originally posted by Moff Jerjerrod
IN the beginning of your games set your TSL (Tax, Science, Luxury) sliders to 8.2.0
I would say exactly the opposite actually.

. I set it so that i'm getting 1 gold per turn, and researching science a lot quicker. This is what the AI does and so i figure it is the best way. Don't get left behind.
As to further tips, what i do is to aim specifically to take the best advantage of my traits and UU. For example, my favourite civ is the persians. They are scientific and industrious. Their UU is the immortals, a better attacking swordsman replacement that comes with iron working.
My sciences: Firstly, i'll get pottery as i need to expand quickly. As soon as i get this, i'll most likely go to iron working unless i find myself alone on an island. Next is alphabet, writing, then literature (for my scientific trait).
My Production: I build warriors to start with. First one to fortify in the town, then some to explore the map, until i can get my first settler as soon as i hit town level 3. I'll build stuff around the building of my settlers eg warriors and barracks. As soon as I can build a granary i will, as this will help my expansion no end.
In new towns: First i build a worker (if time it takes to grow <= time to build worker, otherwise i build a warrior, then worker). The worker first best serves my industrious trait. Then a warrior if the city has no defensive unit. After this I will build settlers as i can etc etc as above. As soon as I get literature, i build a library. This best serves my scientific trait. I will research quicker, and it will also expand my culture borders.
Adapt this to whichever civ you use, and you should then get the best growth that you can.