Go to bowmaker.net and read the tuning information.It is a real good tuning system and tells you how to establish your nocking point height.
Years ago,when people talked about nocking point height,they would say,1/8" or whatever and that referred to how high above level the bottom of the arrow was.Now,most refer to how high above level the bottom of the top nocking point is.You will hear numbers ranging from 3/8" to 3/4".Mine seems to like 5/8".
You can also look up and download stu's calculator and if you punch in all the correct data about your bow,draw length etc. it will get you very close to the correct,shaft,shaft length and point weight that you need.
I like screw in points and keep a big variety on hand to tune with.Varying shaft length and point weight changes the dynamic spine of your arrow and that is basically how you tune.Having a variety of point weights on hand and following the bowmaker tuning information,allows me to tune a set of arrows fairly quickly.Good luck.You came to a good site for getting the information you will need.