How much coffee beans does one coffee cup need to be prepared And what is its caffeine content?

This question is inherently too vauge to be answered. Different coffees, different roasts, different preparations are all variables to this question.

Will you be making:

* Drip coffee * Espresso * French Press * Turkish * Percolator * etc... Do you like your coffee strong or weak?

What roast are you using? Caffeine content is strongly dependent on roast and bean preparation.

Check out the Coffee Geek website and other coffee related sites for more information. Also try a French Press for a different experience from drip coffee or espresso. Some hot water, coffee and a French Press and wallah, you are stylin like Will Smith in "Hitch".