Help for window, patio door replacement in Central NJ

[Abdul R.]

(This is not really a DIY question. If this is a wrong post please move it to a correct forum, I searched and could not find any except this one)

I live in Central NJ. What is the best way to go about replacing my windows and patios? Is there any efficient way, best way to go about this? I want to make sure that my home is energy efficient. Get maximum for the buck I spend also have a WOW factor since I may rent out or sell the house pretty soon. Any help is much appreciated.

Thanks,
Abdul