Congratulations, Neera! Good luck with your journey. One of the best tips for writing an ebook quickly is to do mindmapping -- you mindmap your entire topic, divide them into groupings that will be your chapters, then write a more detailed mind map for each chapter. That way, when you sit down to write your chapter, you're not looking at a blank page and starting to panic. You've already got a mind map. You just have to turn that into words.