Originally Posted by Josieb1
1) I have been advised on another thread that I can use Calibre to convert all my files to mobi. Is it that simple? Or is PRC better?
I'm sure you'll get good Calibre answers on the Calibre thread, so I'll just address the mobi/prc question in regards to Kindle. Mobi and prc are different extensions for the same file format. Kindle can't tell any difference between them, because there isn't any.
Read more about it here, if you're interested: