• On the ONLINE system go to the "Send" tab and enter the payee's details and the amount you want to send them (THIS IS WHERE I GET LOST... WHAT IS THIS??) Click on "Pay" and then "Advanced" to view the unsigned transaction. (WHAT TRANSACTION?? WHAT AM I SENDING TO WHO??)
That is the part that answers your original question:
How can my father and I transfer the ALL of the BTC from the 52-character bit address.org paper wallet into some other intermediary wallet and then into Coinbase all at one time with with one set of transfers/transactions so that my dad can have his BTC in Coinbase liquid and ready to cash out?
Here's a broken-down version of those tutorial:
Open you dad's Coinbase account and get his deposit address, copy it and keep it visible for reference later.
Open your watch-only Electrum and click on the "
Send" tab, paste that bitcoin address in 'Pay to' field and tick "
Max" next to the amount to set it to send all of your available bitcoins.
But before proceeding to click "
Pay...", check each of the address's characters (
from start to finish) if it matches with your dad's displayed deposit address.
In the next window after clicking "
Pay...", newer version of Electrum will show "
Preview" instead of "
Advanced button.
Also since it's a watch-only wallet, it'll proceed with that advanced preview even if you clicked "
OK" instead.
In the advanced transaction preview, click "
Share" then "
Save to file" and export that transaction (
.psbt) to a flash drive.
That's the transaction that you'll need to load to the Offline Electrum "
Tools->-Load transaction->From file" to sign.
Once loaded, click "
Sign" (
type your password), then export it with the "
Share" button and a signed transaction (
.txn) will be exported.
Load that to the watch-only wallet and check every info if everything is correct, click "
Broadcast" to send it.
Note: Coinbase might ask for additional verification if it's a significantly high amount.