CSV import, database location, general settings

Dear WebLibrarian author. I am new to WordPress and I don’t speak a good English, please excuse me.
I just get the plugin and I would like to import in bulk my book catalogue. It is an .ods file of 963 record divided in 16 columns. I converted it in a csv file where the column header match the defined by the database (… or maybe not, I exported as a csv a sample catalogue I have created to understand what is required) but something fail in the “pubdate” field. How can I understand what is wrong?
I would like to understand which is the format of the final file and where the database is located because I would try to manage my book collection in a different way (e.g. add one or more field, or edit the “editor” one that I used for the book series).
Furthermore in a near future I would like to affiliate with Amazon Italy, how can I manage the configuration of WebLibrarian in my WP settings? It only consider USA, Germany, Canada, France, Japan and UK.
Thank you very much for your help. Emilia