Look folks, just do a google search on Robert Hand, or look up his titles on amazon.com . Note that after writing some basic books in the 1980s (like Planets in Composite) he shifted his focus to reviving the lost works of medieval astrologers. You'll see a chapter where he gives a medieval chart reading in Rafael Nasser, Under One Sky.
I wouldn't call him a psychological astrologer today. I certainly wouldn't classify him together with Liz Greene, even when he was writing modern astrology books.
Planets in Youth is really good for people of all ages. I suspect it's pitched towards teenagers, not the itsy bitsies. It does give planets in signs and houses, but what it focuses on are aspects. Too often, aspects are neglected by beginning/intermediate astrologers. I can't think of a better book on aspects, in fact. Sometimes Hand will say, "You might be like..... when you are older," but it isn't hard to interpolate.
Horoscope symbols is probably more for someone who already understands astrology. It is a good astrology 201 or 301 textbook. Although it has material on aspects, they occupy a small percentage of the book. The Essays book focuses on a few specific issues. Probably astrology 401.