You can style your buttons by using different class names found in the buttons "legend" in the Factory:
<a href="[product.link]" class="dfbutton dfgreen dflarge dfrounded">Details</a>
would give you a large, green rounded Details button.
Or you can also use the button generator to create your own buttons: http://www.datafeedr.com/css-buttons/
Regarding the other questions, please post each of your other questions in new threads as per the posting guidelines
so that we can provide you with the best support.