@Syren from what I've seen regarding tarot, it's not the easiest thing to do without prior knowledge or education from a trusted source. Saying that Clearwaters should learn it so they can do a 3 card spread on him or herself seems a bit more destructive than helpful. I have indulged into some divinations and materials; books, and tools. They aren't cheap, or easily accessible without going either to a specialized store or a well trusted site.
Take Runes or Geomancy for example, Futhark runes (Viking Runes I believe) were somewhat designed to be read as an affirmation of the truth someone already knows. John Michael Greer described Geomancy as a forgotten oracle of Western society [European] . It's meant to be something where one has to blankly make marks in sand or earth 4 times in a row then count these marks in order to determine a reading. Acquiring the knowledge necessary to count marks for a reading or interpreting an ancient language into known truth is not easy by any means.
Perhaps directing him or her to someone on this site known for being knowledgeable in divinations or even Tarot would help better? I certainly wouldn't suggest Oranum, but someone maybe you have met here. Your advice is helpful in the fashion that one must find their own knowledge, but finding said knowledge is hard for some.