The blurb is probably the most important piece in your book’s metadata. It is the one thing readers almost always read before deciding whether to purchase your book. A good blurb should be succinct and start with a one- or two-sentence hook. If it’s a novel, it should also:
Introduce your main character(s);
Set the stage for your primary conflict;
Establish the stakes;
Show the reader why the book is for them.