You can read DRM-free ebooks (EPUBs) on reMarkable 2. Kindle ebooks are not supported. This is because some ebooks (including Kindle ebooks from Amazon) are DRM (digital rights management) protected, which is not currently supported on reMarkable.
You can find more information about reading ebooks on reMarkable 2 here.
You can also convert web articles to PDF or EPUB format and transfer them to your paper tablet with one click to read offline with our Google Chrome extension, Read on reMarkable.