There are two ways items can be imported into Omeka, individually or via a CSV import. Importing items individually is much more time consuming on the back end of the process, while creating the CSV file is time consuming on the front end, it makes the actual work of importing items much faster. See below for detailed instructions on both processes of importing items.
Having cleaned up, standardized metadata is important for making the process of importing items smooth and uniform across a collection. Omeka typically uses Dublin Core standards for metadata, so be aware of the terminology used by Dublin Core and incorporate that into your metadata where applicable. Also, when importing individual items, there are many metadata fields (shown in the image below). Don't be intimidated by that! You don't have to fill them all out! Just fill in the pertinent ones!
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 Generic License.