how to upload books to android kindle with calibre?

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http://www.mobileread.com – Can anyone point me to a recipe for how to upload a book to my android device? I'm formatting my own stuff with html and then converting it with Calibre. I'm using Calibre 0.8.61. The Kindle app version is I don't know what file format to use (epub doesn't seem to work) or where to put the file (/sdcard/kindle doesn't seem to work). Thanks (HowTos)