By the way, for those Protestants who mistakenly believe the Bible is a book on prayer, or think they need or should not desire any other book on prayer than the Bible even though the Bible is not a book on prayer, I highly recommend you at least get a Bible that is dedicated to the study of prayer. I thought this was very good: https://www.amazon.com/Prayer-Bible-Modern-Translation/dp/0768404339/ref=sr_1_1?s=books&ie=UTF8&qid=1472136796&sr=1-1&keywords=prayer+bible There’s really nothing like it. I have a copy around here somewhere.
Like everything else in our lives, God teaches us through the Bible everything we need to know about praying to Him.