I dont have much experience on it but still I got some good sort of boom stand here http://www.amazon.com/Lighting-Booms-Stands/b?ie=UTF8&node=3348051 , hope it helps you a bit in deciding the better boom stand.
This is a very basic question but the answer is huge. Many people told you many things and give you lots of information on this but I will tell you try yourself with trial and error method. Get get help from online resources and continue practice. Thats it.