u/WhyIsGamingHated

So I am trying to download a book using Anna's Archive (which I paid for), using the GL link from Wikipedia, but the file I am downloading every time gives an error from Google for an "insecure download". This might be dumb, but I am worried about the file. The book is the ESSA’s Student Manual for Health, Exercise, and Sport Assessment from an insecure web/PDF page. Please help, and if this is stupid, just tell me

I want an upgrade with the same f-mount system, ideally, that could be a used but still very effective camera after borrowing a D3200 from a family member. Is there anything worth the upgrade that won't break the bank and still use the same lenses?