Customers make the decision to buy in a matter of seconds, so it is important to hold their attention as long as possible. To make your document as appealing as you can, think about how many pages are previewed. Make sure the preview pages are structured and do not include handwriting, markings or yellow marker lines. In short, make it look professional.
For more information on how to give a document structure, look at the support page on how to ensure a good layout of your document.
It may be useful to show the table of contents on one of the previous pages, this way a potential customer sees what chapters and topics are included.
Please note: if you use tables and images in your summary, be careful not to plagiarize. In this article, you read more about plagiarism.