There are many books that will guide you in the understanding of the meanings of the tarot cards, but your best guide is your own intuition. I'm not suggesting that you don't study the books out there on tarot. They are great to get you started, not to mention the depth of understanding they can give you. Once you have a good understanding of the basis of the cards meanings it is time to step out on your own and see through your own eyes.
One way to learn the tarot is to pick a card a day, look up the meanings, write down what jumps out at you, and make note of your own impressions. The best time to do this is before you go to bed or before you begin your day. After the day has passed, sit back down, go over your notes, and see how it applied to you throughout your day.
Once you've analyzed the seventy-eight cards individually, you can move own to learning the connections between the cards. You can continue to follow the set routine, but advance to three-card spreads. Once you feel comfortable doing that move on to larger spreads.
How have you learned the tarot? How are you learning the tarot? Share with us your experiences.