Question!
 

what is the necessary items to lower my car?
Lowering spring? shocks? coilovers?
For those that who have experienced lowering a car before..could you tell what to buy and procedure.

You'll need some sort of strut and spring. This may be a separate strut and spring that you purchased, or a true coilover system, which comes with both. The latter is superior in the realm of performance.

I agree....go with coilovers if you can afford them......