Ledger Live to Ledger nano S

Hello, a noobie here with a noobie question. I hope i'm posting in the right place.

I have a problem, which i think is really just an ignorance of 'the way things work'.

I understand that to send altcoins you need an address to send them to, and to receive altcoins you need to generate a receive address and send that to whoever is sending altcoins to me.
But, how oh how, do i 'transfer' my cryptocurrencies from my computer to my hardware wallet?
I'm using 'Ledger Live' and have a Ledger Nano S hardware wallet.
I've looked and looked but everything i find seems to be about 'sending crypto to someone/somewhere else, or receiving from someone somewhere else. When i think i might be getting somewhere i see mention of fees, but how can there be fees when all i want to do is transfer MY coins into My hardware wallet?
I am a noob, but i'm trying hard, and this is something i just can't seem to get my head around.
How to transfer my Crypto from Ledger Live onto my ledger nano S?
I've contacted Ledger, but as of yet, no reply.
Can anyone please enlighten me?