These writings are part of Nietzsche's "Nachlass", things which he never published himself, and they come from one of the two periods of writing in his life when one must be especially careful about interpretations reflecting on his work as a whole. Much of this was written whan Nietzsche was under the influence of Schopenhauer and Wagner, before and just after his first published book, "The Birth of Tragedy". The second "danger period" is his last year before madness set in, with "The Anti-Christ", which probably has more 'Half-baked' thoughts than any three other works combined. So, it is probably important that you start Nietzsche in the middle, with either "Daybreak", "Human, All Too Human", or ideally, "The Gay Science".It is especially dangerous to read the final essay, "On Truth and Lie in an Extra-Moral Sense". He looks at language and truth in a special way, and it is all to easy to assume this represents his opinions on these matters throughout his life. They do not, but some important theologians have taken this as an authority on the nature of language and metaphor. So, it is important to know this essay, but to treat it like an unstable explosive. Very carefully.This also means this is different from most of the later material which has been collected under the title "The Will to Power". I would suggest you read this after reading some of the books cited above, and also after reading "The Birth of Tragedy". This book often reads like outtakes from that volume.