Guide for converting books to Amazon Kindle using Calibre (avoiding font error conversion)

Guide for converting books to Amazon Kindle using Calibre (avoiding font error conversion)

a) (This needs to be done only once at first)
Configure Calibre to remove 'font-family' style element during conversion: 
In Calubre, 
--> "Preferences"
--> "Convertion > Common Options"
--> "Look & Feel"
--> "Styling" tab
--> in "Filter Style Information"
--> check "Fonts" checkbox

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b) Import the book into Calibre fron the Paperwhite device 
(make sure you have Aprentice Alf's plugin installed
and configured for your device, otherwise Calibre
will not be able to convert the book)

c) convert book to MOBI (even if it is already in MOBI format)
May be you could convert to AZW3 too, I didi not try this - in any case, do convertion by Calibre.
If asked Calibre to strip font styles (see step a), Calibre will strip hardcoded font styles
and you will be able to change fonts using Font Dialog on the device.

d) Send book back into the device (by USB or "Send to Kindle" app)