Madrigal
A shout out for the LWB that comes with the Steampunk Tarot. It's written by Barbara Moore and is chock full of great details.
Another vote for the LWB from the LoS Universal Marseille. The information for reading the pips is quick and useful, and absolutely the best summary I've seen in a LWB (as opposed to a full on book book). It actually helped me a lot--that LWB + Gail Fairfield + random background knowledge of mythological number associations = I CAN READ PIPS!
And thus I was freed from the necessity of RWS decks, though I still use and like them.
I feel like the LWB gives you enough to go on so you could buy JUST that deck and be decent at reading the Marseille after spending a few hours with it, no other stuff required.
The Chibi tarot (majors only)
Another vote for the LWB from the LoS Universal Marseille.
Interesting, in fact I am looking now for a good and easy introduction to reading Marseille.
<sadly> Nothing is easy. For learning a new skill, nothing beats hard work.