The "Download Now" link directs you to the iTunes App Store, where you must continue the download process. You must have iTunes installed in order to open the link, and you must have an active iTunes account to download the application. This download may not be available in some countries.
From G.P. Imports:
We compiled an amazing manual full of knots for rope and ties! You will love our huge catalogue which is perfect for many purposes. Main Features: Rope knots, over 150 instruction images! Tie knots, over 40 instruction images STEP by STEP instructions. Amazing quality image (clear, colorful illustrations) Easy to scroll/search interface Lite version will let you see all knots, however if you want to see the written instructions please upgrade to see the banner removed, instructions will be there below.Enjoy! If you need assistance please contact us firstname.lastname@example.org We will be adding additional apps soon! Enjoy!