Civilization 4 help, dont get it?

hi,

iv played the demo of civ 4 but i still dont get it....i really need a guideline of the objectives of this game and how everything or mostly things work there, and once i understand it, will it be a very enjoyable game? if so, i'm looking very forward to buying it.

*its a lot more different from age of empires!!*Civilization 4 help, dont get it?
Easy strategy.. Build 2 or 3 defending units, then build a settler, start a new town, build 2 or 3 defending units then build a settler. in the meantime start building improvements and build roads to your towns. you can put the guys on auto, so they do everyone on their own. Don't stop with a few towns, keep building towns every 4-5 spaces from the previous town. do this until you reach another civilization and then build all attacking units in all towns, and conquer the *****!!! do this until you;ve conquered everyone, NO ALLIES. ALLIES are for wimps. Watch out, game play slows down more and more as you reveal more mapCivilization 4 help, dont get it?
it is a turn-based Empire-building game, as AoE is an RTS.

Just look for teh help phile on teh disk or on the internet, yo.