Once you have your big idea broken down into more realistic and digestible pieces, it should be easier to proceed from there.

Step 3: Organizing The Details
After making a list of ideas to discuss, you need to rearrange them in a logical vertical plane. The main ideas and basic elements should be put at the beginning.

Each idea will correspond to a chapter of your ebook. You can also detail the chapters in different sections for easier reading. 

Okay, you have the topic.  Now it’s time to break your big idea into a series of little ideas.  Write down all the subjects you want to cover in your book, then separate them into chapters.  If you’re writing a story, the same process applies. Think about how you are going to begin the story, and of course how you’re going to end it.  Then have a list of major events that will eventually lead to the climax of the story. This applies to fiction or non-fiction, you want to start strong and end strong.Once you have your big idea broken down into more realistic and digestible pieces, it should be easier to proceed from there.