The instructions are usually on the package. Just add twice the amount of water, bring to a boil, cover and turn off the heat. Leave for 10 minutes and then remove lid and fluff with a fork. One cup of quinoa makes three cups cooked quinoa. Add herbs and olive oil and butter if you wish.

This post will cover the basics for you: http://food52.com/blog/6442-a-range-of-grains-and-what-to-do-with-them I'm partial to this method of cooking quinoa though: http://www.alexandracooks.com/2013/04/03/quinoa-with-walnuts-radishes-spring-onions/