I don't have a ledger so I can't walk you through the process but there was a step by step guide on their website. https://ledger.zendesk.com/hc/en-us/articles/115005174789-How-to-install-and-use-Bitcoin-Cash-BCH-with-Ledger. It does say you have to have a tiny bit of BCH first maybe buy 0.0001 and go from there, goodluck to you!