If you have a resource to share, or discover a broken link, please contact Leanna Bidinger at Publicly distributed information and information about free online training is provided to the public safety community of Washington as a courtesy and not as an endorsement of any specific program. I use that before every synchronisation, it works within a second for the 2200+ ebooks I have, because most of them don't change from sync to sync.On this page you will find various online training courses and supplemental training resources available for law enforcement, corrections, and other public safety personnel. My self answered question How can I keep a large number of EPUB files, managed in calibre, “polished” describes a solution for only updating those Ebooks whose metadata are out of date, and in parallel.

Mostly because the files date-time-stamp change, even if the metadata was not updated, resulting in a resynchronisation of all the file but also because it takes more time than necessary and can cause notification overload in the system. However I cannot recommend indiscriminate polishing of all the Ebooks. Polishing the ebook updates the metadata in the file from the metadata.opf.

The metadata.opf filecalib resides in the same directory as the book in your library, easily accessed by right-clicking the book in Calibre and then 'Open containing folder' This file looks very much like the content.opf file found in an EPUB file, but is different and also exists and has the same format, when your ebooks are not in EPUB format.

Calibre writes the metadata in a seperate file metadata.opf.

Calibre press books