On the 3rd day of Pottermas J.K. Rowling gave to us...

..Amazing info about Potions and Cauldrons!
In Felix Felicius there are two new writings.  The first is about Potions class.  The idea of creating potions has always interested me.  It is great to know that the same holds true for J.K. Rowling.  During this writing we also get insight as to why Snape is Harry nemesis.  We also learn that us puny muggles cannot create potions of our own.
There is also a piece about Cauldrons.  With this writing we as readers learn why witches and wizards use cauldrons still.  In addition, we get J.K.'s insight about cauldrons.  It makes for an interesting read.

This next one is in the chapter titled Felix Felicious. You once again need to answer the riddle: Professor Slughorn. You will be taken to the potions class. Move your cursor along the back bookshelf here you will not only find exlusive info about Potions class but also a variety of collectible potions and ingredients. To get the writing entitled "Cauldrons" double click to zoom in. Next to who I believe is Harry there is a cauldron you can hover over and click to get the new writing.