Mediums obtain messages from the spirit world in different ways. Some receive intuitive information, in which images and words appear as mental impressions that are then relayed along to the living. In other cases, a medium may hear actual auditory messages or see actual images of these messages. Many people who do spirit communication regularly find that the dead can be quite a chatty bunch sometimes. If they've got something to tell you, they're going to make sure you get told. What you choose to do with the information is up to you, but a lot of mediums, it can feel like they've got someone's dead granny screaming in their ears, and if they don't pass that message along to you, she's not going to shut up.
Celtic Cross Tarot card reading predicts your future by reading the cards. This is different from prophesies using calculations of date, time and year of birth. Each prediction or card selection may not indicate the same result. The accuracy depends on your intention and concentration at the time of selection. Thus, it is very important to concentrate hard to achieve the most significant outcome.