  <li><a href="../training/in-app-billing/preparing-iab-app.html">
            <span class="en">Preparing Your App</span>
          </a>
          </li>
          <li><a href="../training/in-app-billing/list-iab-products.html">
            <span class="en">Establishing Products for Sale</span>
          </a>
          </li>
          <li><a href="../training/in-app-billing/purchase-iab-products.html">
            <span class="en">Purchasing Products</span>
          </a>
          </li>
          <li><a hre