Sylvie Steinbach’s method is basically a streamlined approach to the old tableau methodology.
The tableau (all card spread) was a popular way of laying out playing cards in the 19th century. The petit Lenormand is a playing card set. The cards are dealing in rows of six or eight, you found the card that corresponded to your client (normally by hair and age), and would read the touching cards (called attendant) and then count from that card. If you wanted to know about love you went to the knave of hearts and did the same, ace of diamonds for good luck et cetera. Then you read the first and thirty-second, second and thirty-two (pairings).
In the no-layout you are simply dealing cards till your find the one relating to a question, and then you read the touching cards. It will give very basic outlines of an answer, the same as a tableau does, to specific questions.
Accuracy with the petit Lenormand relies on consistency. You should choose a meaning list, and remain with that one. There’s not an awful lot of difference, one meaning list to the other. It’ll expand in real time based on your own usage: that’s progressed meanings, no different to having the Letter now for facsimiles, greeting cards, and so on. It moves in time with the reader and their ability to combine their cards into accurate statements.
No “school” is better than another. To be frank, there is really no such thing: it’s a term coined by Anglo-marketing. There are really just two basic methods: distance and combination. The latter is more dominant, the former is more popular in France where it is a primary and often standalone. All the others (Spanish, Russian, and Dutch) are just variants of those two methods in different degrees.
I’ve worked with the set 20 years, and it’s accurate. It’s no easier or harder than tarot (that again is a set of playing cards). As long as you’re patient, and consistent, and remember the context of what you’re reading (i.e. in a love reading the Bear can be a possessive older woman, in a work reading you’re in good solid ground/a team leader, in money it’s around a thousand pound +, it’s keywords are: power, strength and maternal and all those come from those simply definitions) you should be accurate.