Well, to start, two pages isn't exactly an E-book, but more like a flyer or poster. Second, you post referral links (behind adfly redirects, no less) in your PDF, without a disclosure (which is unwanted in the minds of some people). Anyway, these sites aren't verified mining operations and may very well just be scams/ponzis. Did you review their trustworthiness/block generation at all?
Finally, I would advise a careful grammar check for your next revision, after the other issues are fixed. At this point it's spammy, annoying, and barely informative.
I suggest adding a version of it on forum. It might be me but I hate things like this that are like learn X here just download a file! As I really don't want to download random files and no offense to OP I just don't trust people specifically almost brand new people. Also doing it and having referrals almost makes it seem like you created an account to hide your main and try to get referrals but again I speculate.
But the honest truth of cloud mining is you don't need to look around much. To many scam sites, and frauds. I personally only suggest hashnest on cloud mining or people can use reputable hosting centers to.
