If you're ordering a course, we'll take full payment when your order is placed. 

If you're ordering books only, we’ll charge your card as follows: If all items are in stock – we'll take payment for the full amount upon dispatch of your order. 

If any items are out of stock (back order) - we’ll take payment for only the items that can be dispatched, plus the full postage cost. We'll take payment for any outstanding items as they are dispatched. You won't be charged again for shipping.