This is a very small book of exercises, and can be useful for the begginner, but as the frontspiece tells us, it was intended to be a thorough warm up for gig-ing professionals, and it packs a punch. Some of these stretches are very tough, and while they are difficult, it is clear why they are useful and neccesary in warm-ups. Salzedo thought these out very carefully, and while one piece focuses on pre-placement, the next focuses on separate placement, etc., so it truely is a full work-out. (And I do mean work-out... these are not exercises for wimps, but for someone who wants to be serious and who will be rigorous on yourself on the specifics of each warm up.) I am so impressed with this, and do intend to work on it regularly so that I can memorize it and then just "take it with me on the road". Excellent and well worth the small cost.
(My only exception... I understand Salzedo had a large hand. I have a large reach and still find some placements a challenge. If you are a harpist with a very small hand some of these may simply be -literally - out of your reach.)