Start a new book
Books → "+ New Book". Pick a title, your author name, the genre, and an optional word-count target. Adding a one-sentence blurb gives Wally enough context to suggest an outline and a cover. After create, click into the book and use the Manuscript tab to add chapters, or ask Wally "outline this from my blurb" — Wally proposes a chapter list and you confirm before any writes.