I am still trying to wrap my head around this. So who holds the ledger and where does our paper money go to? Also, the guy in the video, are you single.
Your paper money goes to whoever sold you the bitcoins, it could be an exchange or an individual, depending on your purchase method. The Ledger is a hardware wallet which you hold… Unless you mean the Bitcoin blockchain, which is sometimes characterised as a “public ledger.” In the case of the latter, all people running a full Bitcoin wallet have a copy of the ledger.