Stumbled on this video. More orientated to metal smiths, but good overview of types & terminology. Otto Frei is a US company but you can same/comparable files at other jewelry suppliers for example Rio Grande also in USA. Slimmer pickens in Canada AFAIK - Gesswein & also Kens Gems in Calgary (prices vary). Wallet warning, Swiss files are spendy.
https://www.gessweincanada.com/category-s/10443.htm
https://www.riogrande.com/searchres...sort=relevancy&layout=card&numberOfResults=36
https://www.gessweincanada.com/category-s/10443.htm
https://www.riogrande.com/searchres...sort=relevancy&layout=card&numberOfResults=36