Although it isn't my intention, I do understand that this might come across as rude, but how is this different from the last few times it has been posted here on hackernews?

http://www.hnsearch.com/search#request/all&q=nodebeginne...

6 months ago, 4 months ago... It may be a good book, but it isn't new, or as far as I know, changed significantly enough to warrant being listed on the front page.