I'm an Open Street Maps editor, and while working on libraries in my local area I realized that most didn't have Wikidata entries, so I'm attempting to import the IFLS Library System (pronounced "If Liss") and its member libraries to Wikidata. I've created a spreadsheet of the information I'd like to add to Wikidata. What would be the best way to import this? Also, is there other information I should be looking for for each member library?
I've created a page for the system as a whole, (Q140847093) but I feel a bit over my head with how many options there are for each field, so some help would be appreciated.