Novels are built out of chapters. Chapters are built out of scenes. Scenes are where you do your writing. Every writer has their own way of creating a novel. Some writers like to plan all/part of a novel before they start writing. Others dive write in and start writing. Still others mix and match. Writing Shed lets you adopt any of these approaches.
For now though, to keep things simple, we will follow the second path. So, the first thing is to create a new scene.