The pages you have added to your customised Easysite brochure are listed to the left. You can remove pages by checking the box and clicking the 'remove from my brochure' button.
You can re-order the pages using the 'Up' and 'Down' links.
When you are ready, click the 'Create my brochure!' button and Easysite will convert all of your selected pages into a single consolidated PDF brochure for download.
This functionality is provided by the Easysite eBooklets app, find out how you can add eBooklet functionality to your site with EasySite.