I pretty much buy most of my books from Amazon. I did so for a long time before hearing about calibre. Then I got calibre for out of copyright stuff and started using it as a backup. But then I realized that backups don't do me no good if I don't have that specific kindle anymore down the line.
So I learned about Alf here. Lets just say I didn't know what I was doing and still don't. My tools are probably outdated but it works so I don't want to mess with it since I can't figure out how to put the new ones in.
I am just doing it for me and as a proper back up for the books I buy. They are my books, I want to keep them. If something happened to my amazon account like someone hacking into it, or some stupid computer error then I might lose access to all my books. I have 2000 of them. I know its not very likely something happening, but it might and I just feel better having them in any case.
I actually just found 2 books that are gone from my amazon account that I bought and I still have a back up now due to calibre. I have no clue why they are gone from my account and I don't feel like bugging amazon about it at the moment. I only found out by accident. So now as soon as I buy something, I load it into calibre and I guess Mr Alf does some kind of magic. Again, I am pretty clueless to that stuff but I still want to protect my books.
Now I have a great system in calibre and sorting my books there. I am a bit list person and spreadsheet person so I love having all the virtual libraries too.
. I also love the randomizer when I just can't figure out what to read next from my books.