> workarounds involve getting Amazon to send you an older version of the file I have stopped buying ebooks from Amazon when I discovered I couldn't strip DRM f

> workarounds involve getting Amazon to send you an older version of the file I have stopped buying ebooks from Amazon when I discovered I couldn't strip DRM from them anymore, but I wasn't aware of these workarounds. Where can I find tutorials about those? (I have about 20 ebooks I bought between the time KFX came out and the time I found out about it).