This is a very good website for understanding the meaning of tarot cards. Here's an excerpt of its explanation for the cards I got today:
PAST
In short, the Seven of Cups is a sign to be vigilant in everyday life. Be on guard against temptation, and before taking any offers be aware of all the potential ramifications. Keep a close eye on your dreams so that they do not get too farfetched and fantastic. When faced with many choices, all of which seem equally attractive, turn to your intuition for guidance. If you still don't know which to take, it might be safer to not take any of them at all! Better to leave the gems than plunge one's hand into a cup full of snakes. If your ethics are questioned, do not go against them, but stand true to your beliefs. Keep your feet on the ground, and your head out of the clouds.
PRESENT
When the Eight of Pentacles appears in reference to a project or a task you have been working on, redouble your efforts and your concentration, because rewards are near. What you are undertaking will be difficult, but it will give you a lot of valuable work experience and knowledge. Watch for someone more experienced that you who may be willing to gave you assistance; every apprentice needs a master to guide them towards greatness. Never take your eyes off the goal. If a job is once begun, never leave until it's done. Be the labor great or small, do it well - or not at all.
FUTURE
Judgement's appearance in a reading often signals that a major change is heading your way, but unlike Death and the Tower, the change will not be a destructive one. The change is under your control, and in fact you can even turn your back on it if you wish. In time, however, you will likely regret doing so - this is another lesson of Judgement. Decisions such as the one it offers are necessary to growth and spiritual development, and you cannot run from them forever. The day of reckoning will come someday, and you will have to admit where you have gone wrong in order to receive rewards you deserve.
