I was wondering what tarot hand/reading is the most accurate? There is the basic 4 cards that make a cross-like patter and much more complex ones, but I'd love to know which one is the most accurate since I've done a few for friends.
It all depends on what kind of reading you are doing and how experienced you are.
If you are doing a general reading for someone then something more complex like the celtic tree can usually give the best results, including reverse cards increases the complexity but can also increase the readings accuracy if done right.
However if you are doing a specific reading with few available spread options then including reverse cards can increase accuracy, it all depends on your prefered method of reading and skill level I suppose.