Here's how it works: First click on the topic that you are interested in. If you wish to purchase one of the items, simply click on its picture. You will see the pricing information and delivery times. If you decide that you want to purchase the book or CD, click on the button 'add to shopping cart'. Then press the 'back' button on your browser two times to return to this site. You can continue the same way with the other books we have reviewed and look at our recommendations for other tests also, of course.

When you have finished shopping, click on the link [check out] on the left menu. In the next window please find the shopping basket symbol (see below) and finish your order by entering your personal data.

In case you have any questions during the process, simply click on [Help] and you can read this text again.