“Ah, but a man’s reach should exceed his grasp, Or what’s a [library] for?” (with semi-sincere apology to Robert browning)
I have been “buying” anywhere between seven and 30-something books a week for years (larger numbers once ebooks became necessary when I ran out of space no matter how diligently I purged my personal library). I only read about seven books a week (down from the 20-something I used to read when I was a lad), but I do find I discard more ebooks after partial reading than I have ever discarded hardcopy. Writing and editing standards have slipped terribly.
Still, having all my hardcopy classic collection backed up in multiple formats, media, and locations (and adding to it) is a Good Thing, IMO. Sadly, my non-fiction Kindle is out of storage space, now.
I like the Nook for just this reason. When I find myself running out of storage I transfer what I can to an SD card and then copy it off to other storage.
But, as long as Amazon and Barnes and Noble are around I can archive what I buy from them.
Oh, I remove (cull, weed, whatever 🙂 ) books from my Kindles periodically. I also download all my Amazon-purchased books and run them through Calibre (with appropriate plugin) to de-DRM them for storage elsewhere. That allows me to do my periodic culling w/o either losing the books or relying on Amazon to keep them archived. and since obtain many of my ebooks apart from Amazon (in mobi, pdf, and html formats), I’m able to keep the entire ebook library together. . . in several different places/on different media. *heh* I even convert mobi to pdf for non-fiction/reference works, just to have a different format archived. I don’t generally bother to do that with fiction, though, except for the classics I really want to have accessible in as many different formats as possible.
Some, my “EPREP” ebooks, I also keep on easily-transportable flash devices I can access via one of my notebooks (if backpacked, a lil netbook running Slacko Puppy would be my preferred device. I even have some books pre-loaded on the one I’d backpack. *shrugs* Yeh, I could load up a memory card for my phone, but that’s just too small for me to read comfortably). With a foldable solar charger, the lil netbook makes a nice carry-along.
Etc.
What plugins are available to remove DRM? And, can I do it legally?
I question the legality of DRM (the Monster from “The Law from Disney”). I have no doubt about its immorality. Limiting usage by people who have PAID for a work simply because some others pirate works is analogous to punishing lawful users of firearms (manufacturing outlaws by outlawing unharmful behaviors) because some misuse them. The single most effective way to destroy respect for law is to enact disgustingly stupid, immoral laws that are worthy of disrespect. Thatisall.
I use DeDRM and set it up using this method:
https://www.ereader-palace.com/calibre-drm-removal-plugins-download-use/
N.B. A recent Calibre upgrade messed up proper cataloging and DeDRM-ing azw format books, and I had to “down-version” my Calibre setup. *shrugs* It was really more like Amazon got snippy and the older version (2.79.1–I use it in a portable version) works for me. actually, I didn’t really “down-version” installed copies until I had used the older portable version with no problems, then have since just slowly shifted to using only the portable Calibre, with plugins installed on it as for the installed versions.
YMMV. The newest DeDRM plugin is supposed to deal with the azw issue regardless of Calibre version, but it was not so for me.
N.B.#2 epubor.com offers its own DRM removal tool, which I have not tried, that purports to be the easiest way to remove DRM from books.