Hi all. After 7 years of resistance I am finally joining the Kindle bandwagon (two previous Sony readers).

My new PW will arrive next Monday.
I have a few quick questions about the books I already own. I am converting them using Calibre- I assume AZW3 is the best format to use?
And, I downloaded the send to kindle app earlier because I would like to load the ones I have to the Cloud so if I am without my reader I can read in the same place on my phone. But when I pulled up a book to transfer it it asked me to fill in the title and the author was my name by default. Does that mean if I transfer this way I will lose my metadata? Any advice on the best way to transfer would be appreciated, or if I am better off just sideloading. It's not a huge deal, I am VERY rarely without my reader.