skill set

There is no end to the books. You could fill your house with Tarot books and just exhaust yourself with “book” knowledge of the Tarot cards. And why shouldn’t you, if that’s what you want to do.
 
If you would pick just one good classic book and just sit with two or three cards a day, for about half an hour a day, you could learn the entire deck in one month. Then take a week to review, and without putting any strain on yourself you have mastered the book meanings. Anyone with moderate self discipline can do that much. Even I have done it.
 
The book meanings will not show you what the person is feeling in their body or thinking in their thoughts, their memories or their loving relationships, what risks they have taken, why they have so much pain or exactly what they fear. The book will not teach you to love that person or to care about helping them. The book does not see with their eyes or hear with their ears. Only being psychic will do that for you. Being psychic is an entirely different skill set.