The entire plan is included in a single PDF document each for the base unit and the upper unit. It is likely that you have a PDF reader installed on your computer already, but if you have trouble opening the file you can use the free program Adobe Reader to view the plans (available here). The checkout process on my site uses PayPal where you can use either your PayPal account or major credit or debit cards. Once your payment has processed, you will receive an email receipt for your purchase and that will contain a link to download your plan. Please be sure to check your inbox for the download link, your spam filters if you don’t see it in your inbox, and if after ~30 minutes you don’t see it in either place or encounter other issues, please feel free to contact me. Note that any downloadable product in my store is not refundable once you have downloaded the file.