Going to make this simple for everyone... I am selling a method to clients who are looking for adult traffic that in the past has made me thousands and now its time to move on like any method to a new and improved method. Anyways the method still works and I have decided to sell it for $25 per copy. Now I already have had one buyer and I am looking to make this method into an ebook for him. What is the best software to use for ebook creation?