Step 1: Sign up to be the site member first.
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Step 2: Visit the " VIDEO SHOP"  to select the videos you like.
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Step 3: Add the videos into your cart.
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Step 4: Check out with your WISE account or pay with a card. 
          （The billing address information does not need to be real,
              a few letters can also be passed.）
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Step 5: After paying, you'll get the PDF file of the download link .