Rabbi Arthur Green’s short book, Judaism’s Ten Best Ideas, will hold no surprises for the person well versed in Judaism.
Green goes over very common, but essential notions. These are Simhah, Joy, Tzelem Elohim, creation in God’s image, Halakah, walking the path of formal, rule orientated Judaism, Tikkum Olam, repairing the world, Shabbat, Tesuvah, returning to G-d, Torah, Talmud Torah, or education, L’Hayyim, accepting death and affirming life, and Ehad, Hear O’Israel, the affirmation that God is One.
His exploration of these key ideas bears his indelible stamp. Even if you are very familiar with religious Judaism, this book is still a bright and fresh look at some common notions. If you are a beginner, this is a great place to start and also a compliment to any ongoing studies.