I grew up watching my mom & her friends reading Tarot in the 70's and 80's and it scared me a lot. They used Rider-Waite & some of the images were so strange (7 of cups anyone?). I remember that we "had" to cut the deck 3 times with the left hand only, and to the left. When I was 14 I took a solo trip to LA and my Uncle's girlfriend at the time took me to the Bodhi Tree for my first deck but flipped out because I wanted to buy a used one and she was like absolutely not!
I'd like to hear others thoughts on these ideas and other lore/superstition they picked up and if its valid & something to be aware of.