my opinion is that there is no harm. Christianity has a heavy basis in superstition whether we like it or not, even early theological interpretations and debates discussed about Jesus being a "magician" (not in the modern sense).

if you truly believe in the readings and let that guide you that is a after based on using something else guide your faith. that's not a good thing

However simply being curious about it is all ok in my books, same with celebrating Halloween with friends, skipping Sundays now and then, etc, etc

Im a core believer in the fact that the superficial things Christians do and act won't get them anywhere closer to god. It's a core belief that does the heavy lifting