There sure are a lot of letters throughout this deck, but I'm sure that's just a coincidence.

Maintain order if nothing else.

The back of the cards have something... well-suited... for ordering your deck.

A is 1 and B is 2, and while you should follow suit, it's tacky to stay in the same suit.

Feel free to lay it all on the table. A pattern may emerge shortly.

Begin with the Ace of Hearts. Follow the suits given on the back of the cards in the image (heart, club, diamond, spade). So the Ace of Hearts is A, the 2 of Clubs is B, the 3 of Diamonds is C, the 4 of Spades is D, back to the 5 of Hearts and so on in that rotating order. This will construct your alphabet for later.

X's, V's, and I's (oh my!)

When in Rome, do as the Romans do.

An ancient numeral system, but a necessary one.

Numbers are nice, but I want to go back to letters -- just not these ones.

Letters to Numbers, and then back again - do these antics ever end?

From Roman numerals to Arabic numerals and finally, using an alphanumeric cipher, back to the English alphabet.
It reads: "If these cards have come to you, then you know what you must do." (No need to translate the other backs of the cards -- they all say the same thing!)

Another alphabet, but not from any one suit, I'm afraid.

Played and displayed, albeit a bit differently than usual.

Each symbol offers a suit and a value.

Not every card can be a letter, but many of them are.

Each set of pips stands for a letter from the alphabet integrated throughout the deck.
Her border reads: "The equation is quite concise, for each favor there is a price."

Another alphabet, but not from any one suit, I'm afraid.

Played and displayed, albeit a bit differently than usual.

Each symbol offers a suit and a value. Be sure to rotate if necessary.

Each set of pips stands for a letter from the alphabet integrated throughout the deck. Half the message can be read at any given time, to read the other half the card must be turned 180 degrees.
Her robes read: "Four things are sought, even queens can be bought."

Be sure to solve all four suits first! And perhaps the robes as well...

Many of these odd symbols seem reminiscent...

Remember your old suits may need to be re-worn once more.

An out of order border? Best to reorganize.

A message written in four different sets of characters, each of which appears in only a single suit. Using the indicated suit order of Heart, Club, Diamond, and Spade, read through each set of characters in order, this border says: "The Makers of these cards are certainly no mystery, they weave the cloth of history."

Be sure to solve all four suits first!

A strange assortment of symbols, but nothing new I'm afraid.

Remember your old suits may need to be re-worn once more.

The knowledge you've gained so far is well suited for this task.

Maintain the given order and translate carefully.

A combination of alphabets and symbols from throughout the deck, in order: "We are coming for you. Mind your borders and orders."

Be to follow all orders & instructions provided.

You may require some assistance for this. Feel free to reach out.

Inform Lisa of your progress.

No, no, not through the usual mail carriers.

Have you gotten a reply to your e-mail yet?

Send an e-mail to the listed e-mail address, and you will receive further instructions there.

Gosh that's a lot of reading to peruse!

There's more to the Infiniti Institutes than records & research. You just have to find it.

Make use of the monikers.

The Faculty are the most important part of the Infiniti Institutes. Without them, we're nothing.

Pay attention to every detail (especially the highlights)!

Take a close look at the URLs as you search.