How to Read a PDF on your iPad
Step 1. Open your download link in Safari browser.
Step 2. Tap the document and in the bottom right corner click on OPEN IN…
Step 3. That opens up the menu and then select Copy to Books
Step 4. This imports the PDF into Books and from then on, you can access it by opening Books.
Step 5. Once in Books, if you touch Collections, you can select PDFs and then select your manual.