You can use the import wizard to import data to your store. Below are some sample import files that have been populated with dummy data.
You can populate these files with your own data and then import them by going to Setup & tools > Import Data.
The below file is pre-populated with sample data in order to show you how your final import spreadsheet should look.
The below file is a complete list of the Product Fields available in Neto with the type of field, any restrictions that field may have and an example input for each.