walking for those already in Buddhism

This book is historical and excellent (not hard as well commented) but adesse is only those who have already bases and (curious or students) wanting to go further by already exploring the basics texts of the main "schools".
Not for beginners though rather easy to read ... because of a "level 3" to summarize.
What beginners rather see (level 1) "The teaching of Buddha after the oldest texts" or (Tibetan Buddhism): The light of Dharma and "Introduction to Tibetan Buddhism" (Dalai Lama / jean herbert).
And for a first contact, a gift of the people attracted to these little philosiophiques or religious paths (level 0): "The Art of Happiness"
and then (level 2) "The World of Tibetan Buddhism"