Hi Mark and welcome to Talk Magic
This is an honest answer to your question -
DON'T BUY ANY MORE TRICK DECKS (particularly from Ellusionist)
You'll be wasting your money and this will slow your progress if you seriously want to learn and impress your friends. In fact, give Ellusionist a wide berth for the time being.
What you need to buy is a good course in magic and most of the best ones come in book format. There are stickies on the forum to guide you in your purchases and you should seek these out and read them with care as a lot of thught has gone into these from the forum members.
Good luck
Member of the Magic Circle & The 2009 British Isles Close-Up Magician of the Year
It's not really an optical illusion - it just looks like one!