Can I revise the information such as Title, Collections and Tags on Shopfiy?
I have a bunch of items so I want to revise all information on .CSV file.
Sure! You can export your product list from Shopify > Products > Export: HERE (https://monosnap.com/image/cZ4tnAMMgkscP8ZMHSoHscrhFEPsKz). The export file will have all your mentioned information.
Take note, however, that if you import back products to Shopify via Excel file, then they will not sync with Oberlo.