[Koha] Koha questions

[Albert Kastl]

Hello,

I'm new to Koha and need some help. We are a parish library and looking for
a free library software.

Questions:

1. Is there a possibility to use only the book fields which I need and get
rid of the other not needed fields in the MARC record?

2. I have already book-csv-lists with the fields "title" and "author" for
ca. 3500 books. Would it be possible to import them somehow into the system
and fill the necessary fields from 1. by hand afterwards? Or do I have to
have filled a special field, like barcode (we do not have a barcode
reader), before the import?

It would be great if you could help me with my questions.

Thanks a lot in advance.

Best regards

Albert Kastl