Christian Wolff’s Vernünfftige Gedancken von Gott, der Welt und der Seele des Menschen, auch allen Dingen überhaupt that is also referred to as Deutsche Metaphysik is on Google Books – there are several editions, some are horrible scans, but this one looks very nice and clean (with only some pages poorly scanned here and there). This book was basically a major textbook that someone like Kant would read in order to “get into” metaphysics – fun read, I think…