Myself, I feel no need to know the in depth historical or acedemic or scholarly(you get the point) information on most types of divination, excluding astrology, which I don't consider just divination anyhow as it's more complex than that. Sure, with Tarot I have a good understanding of the basic origin, the origin of different decks and the use of symbology in historical referece to the cards. But I am much more interested in the developing connection I have with the cards, what they mean to me, and how I see things shaping with them currently.
Well I do rune readings, and am still using the book that came with them to interpret the readings

The readings do seem to work fine for me. If I were to do more research, would I get more info out of a single reading? Probably. But they work for me now, albeit a little slowly as I have to read each interpretation out of the book, stumbling around in the book as I find each one

One interesting twist: I set the runes up in an astrological 12 houses pattern to do a reading, then an overall rune for the reading in the center. It gives a LOT of info that way.
Gina