help picking lighting

Ok. I am a newbie lookinf for inexpensive lighting. MY tank doesnt even have live stock yet. I DO want add SPS and LPS in the future. Please tell me a way I can buy two bulbs and add two later. Instead of dropping once on a four bulb strip. I have no clue as to all equipment needed. Also there is color temps right? If so I would like somthing like this...

 

Ok apparently I find out the color temps are to sumilate night and day? Ok What is the best bang for my buck? not necessarily the best type of light but the best one that will do the job?

 

have you decided if you want metal halide or T5? if you want T5 just get one fixture. if you plan to build a canopy you can buy retrofit kits for the T5 and go with two bulbs at a time until you get the desired quantity. (i say two because a T5 ballast generally supports two bulbs, however you can get ballasts that support many)

 

check your PM.