For the other teas, check the box next to the item(s) you want and Click on the "Order" button nearest that item to add the item to your shopping cart. You can View your shopping cart by clicking on the View button at the bottom of the page.
If you decide to also order another item in any group (indicated by nearby order button), be sure to uncheck the one you have already placed in your shopping basket before clicking on the "Order" button for the new item, otherwise you will end up with two of the first item added.