There's a lot of ponce in the book; I won't go into that, this review by "John" seems to cover most of it1. I found the online version via IA, and since they're having a fundraising drive now, my image links to their "donate" page; I did.
You cannot be serious
The book reeks so much of pretentious puffery that it is hard to see how it can ever have been intended to be taken seriously. Nonetheless, people appear to do so and I suspect that N intended it as such. But nonetheless always in a "playful" vein which conveniently allows him to disown any particular sentence or fragment that might otherwise embarrass him. To me it reads more like Oscar Wilde tossing off epigrams at a rout than anything serious. As to deniability, wiki says of the title "Ecce Homo" In this regard, the wording of his title was not meant to draw parallels with Jesus, but to suggest a certain kind of contrast and so on. It is all like that.
I been Ayn Randed, nearly branded Communist, 'cause I'm left-handed That's the hand I use, well, never mind
Simon and Garfunkel, as I'm sure you knew. Why do I mention it? All the stuff about the weakness of pity and how terrible Christianity is. You'll want quotes, so: a creed so wretched as Christianity; Christians and other Nihilists; the degenerate instinct which turns upon life with a subterranean lust of vengeance (Christianity; it is only among decadents that this pity is called a virtue... The overcoming of pity I reckon among the noble virtues; and so on. As it happens, I have some sympathy with this, though not in the way it is said. It is eerily reminiscent of Ayn Rand (although of course, given the time order, it is actually the other way round), of which my recently vanity re-published book review will provide you a handy ready-reckoner. See-also Master-Slave morality, if you can bear it.
In the paper version he declares himself a pure-blooded Polish nobleman; he speaks disparagingly of German culture but dotes on the French; and so on. Wiki tells me he had his Prussian citizenship annulled. There's loadsa pop-psychology in there so I feel free to indulge in some briefly: doesn't denial of one's nationality and apparent loathing of one's nation imply a degree of self-hate inappropriate for the man N claimed to be?
The S-word doesn't appear anywhere in the wiki article about N, it is far too elevated for that sort of thing. But even the mealy-mouthy Friedrich Nietzsche's views on women is obliged to quote some of his poison. The best you can say is that it was the kind of trash people wrote in those days, and other men at nice dinner parties tended to agree with it, and pass over such as Women all like me. . . . But that's an old story : save, of course, the abortions among them, the emancipated ones, those who lack the wherewithal to have children.
More dangerous ground here, particularly as I'm unread in this area and am piecing things together without bothering to read all the sources. You cannot accuse N of being a Nazi of course; he predated them. And I saw nothing anti-semitic in there. But what there is in spades is what Popper complained about in TOSAIEv2: stuff like: The truth of the first essay is the psychology of Christianity: the birth of Christianity out of the spirit of resentment, not, as is supposed, out of the "Spirit,"—in all its essentials, a counter-movement, the great insurrection against the dominion of noble values... Can you see what is wrong with that? If you can't, you may need to read Popper, who says it better than me. It is the denigration of decent behaviour in favour of allowing free reign to "noble"s to behave as they wish. Which segues into National Destiny and it's all downhill from there.
On the meaning of words
One cannot help but notice how much of N is subject to interpretation. He uses ambiguous words and phrases, perhaps out of simple intellectual inclarity, but more likely out of the previously alluded to desire for plausible deniability (I commented on deliberate avoidance of precise language in the context of Curry, in 2014). I find N inferior to Popper or Hayek - or Hobbes, or Smith, or indeed anyone of whom I've been able to approve - on this ground.
1. You may need to discount point 3 somewhat, though: N does appear to have some military service, if I can trust wiki.
* IT'S EASY TO CONFUSE THE MINOAN WARMING PERIOD AND THE MYCENAEAN WARRING PERIOD
* The Grumpy Economist: John Cochrane's blog: Economists as Public Intellectuals