A very simplistic if friendly intro to the Waite-Smith. "Thin" is the word I'd use. And I'd recommend Teresa Michelson's Complete Tarot Reader over this in half a heartbeat.
Here's the caveat: Easiest Way to Learn the Tarot is shamelessly, adamantly Waite-Smith based, no two-ways. And like most new age intros to the Tarot, it treats the deck as if it sprang up in metaphysics shop-shelves around the world fully formed. The "E-Z plan" only subjective in the sense that White plunks this one deck and its illustration in front of you and leaves you to work out what the scene depicts. That isn't intuition, that's just making sense of a picture. Those scenes are not open-ended or free-form. They did not fall from the sky. There IS a system there under the line art and primitive coloring.
When White says that you learn to read the cards by responding to "the visual stimulus of the Tarot, rather than limiting the student to a handful of meanings," that means that you are literally reading the meanings that Waite gave to Smith to illustrate. No more no less. Liber T is back there under all the chatty hand-holding and blank workbook pages. To claim that figuring out what the illustrations represent is NOT following somone else's interpretatiion is ridiculous. A bit like figuring out the recipe for Mac 'n Cheese by eating Mac 'n Cheese and then hunting around a pantry till you find the ingredients. The Waite-Smith interpretations of the Golden Dawn meanings is narrow and idiosyncratic in the extreme. Ask TdM people about the 10 of Swords or the 7 of Coins and you'll get a very different take. All the "Tarot in 10 Minutes" classes and "E-Z Intros" in the world cannot negate the fact that the Golden Dawn magickal system is the lifeblood of the Waite-Smith cards.
Still, no one says you have to understand what you are reading to start reading, though you may want to down the line. Most casual drivers prefer automatic transmissions on their cars and have no interest in the engine or the design. If you want to learn to read the Waite-Smith Tarot and you prefer workbooks in chatty idiomatic second person, it's a fine beginner's book. But just because Dusty White isn't explicitly telling you what Waite or Smith intended, the intention is still there and you will be studying those meanings as you discern them. And when the time comes that you want to peek under the Waite-Smith hood or are interested in putting the divinatory pedal to the metal, there are plenty of other titles to explore beyond.