"I also find it easier to stay motivated when I think about the fact that people around the world are getting better off, and how that’s often down to the hard work of others." This is definitely helpful and motivating for me atm, thank you for posting this today :)

Haven't read all of it- but I believe there's an error in the first line, which says this is the "second of three parts", I think it means third. Sorry my engagement isn't more interesting :P

I just spent a very exciting hour going through every link (yes, I clicked all of them) in the handbook, and I think I have a definitive list of mistakes in the links (if there are others, may they remain mistakes ever more :P ): p.47, Engines of Creation p.77 expected value link p.77 Risk aversion and rationality , Use http://fitelson.org/seminar/buchak2.pdf instead p.80 – scope insensitivity p.80- Luke Muehlhauser has commented p.127 “our profile on the long-run future” Footnote 43, p.137, link 2, related to diarrhoea p.142, “animal welfare profile” P.144- systemic change profile link works, but looks slightly unprofessional You could do with a link to the 80,000 Hours Podcast and the Doing Good Better podcast on p.166

I think there's a mix of working and non-working, having just checked myself. Some don't go through to anything when you click on them; some go through to a 404 error; and some go through to the correct website.

Bizarrely, this will depend on the copy I have downloaded. I have downloaded it more than once, and it works differently each time. The first one I have downloaded (I downloaded more than once in different tabs) works in every link I check. The second one doesn't- and this remains true when comparing certain links like for like. I'm not really sure why. Bit bizarre.

A few quick comments, have skimmed through rather than a read in depth (have read a number of the articles in the past):

1. There's a format error on p.167- Under 1. Learn more, there is a spacing error in the paragraph, which bizarrely cuts the paragraph in two for no reason. [Edit: this is not a lone error, I've found another on p.142, there may well be others, I haven't gone through exhaustively]
2. I'd be interested how the relevant cause areas were agreed upon? There's a heavy emphasis on Artificial Intelligence and the Long-Run Future (three articles on AI); and some areas of interest to EAers get very little or no mention at all (e.g. Mental Health and Happiness, re Michael Plant [EDIT: there is some mention of this, but there's still at least a good question here about how cause areas are decided]). Perhaps there's also a lack of concentration on cause areas versus career paths (and the Gov. article is great but extremely America heavy, which is not helpful for non-Americans). I suspect there is more to be said as to how this is decided, but it would be useful to understand this.
3. The recommendation of different books at the end is interesting- given the heavy emphasis on the long term-future throughout, it seems to me that the recommended books diverge from that (Doing Good Better and the Most Good You Can Do aren't hugely about that from my memory?) Would it have been better to recommend SuperIntelligence; or the Global Catastrophic Risks volume which came out a while back; or something else, if the Long-Term Future dominates the attention elsewhere?
4. One worry I have is that it does a lot to suggest possibel directions for EAers, and little to deal with objections EAers might face. The original handbook seems to have slightly more on that (e.g. the Estimation article from Katja; Holden's article on White's in shining armour); and there are other ones which regularly arise e.g. the collectivist/coordination ideas that Hilary Greaves has been talking about (no individual can ever make a difference); or objections which focus on the overriding significance of virtue/the total cluelessness of us all. It might be that these are dealt with in some other way (I'm not clear how) or that this is simply not that important (which I question, but am uncertain), and so would be appreciative for your thoughts.

Mainly, though I liked it, so my critical points aren't to be understood as a total rejection of the piece! It was great in so many ways, and I'm sure required a fair amount of work!