The cataloguing module in Koha allows librarians to add new bibliographic records through data entry or copy cataloguing. It provides frameworks to catalog different materials like books, e-resources, serials, and periodicals. The book framework includes fields like title, author, ISBN, and subject headings to catalog books. Librarians can save records, add barcodes/accession numbers, and create duplicate or multiple copies of items. The module allows viewing catalogued items in normal or MARC format.