Being new to BTC I would like to know where the BTC are held that are for sale? I am learning as I can understand a complicated subject the deeper I dig into BTC. My stepson is a BTC bull, and he says I need to spend 1000 hours to understand BTC? Other than private wallets, is there a pool of BTC, and how many are there of the 21000000 total available? I am looking to buy more BTC ETF before I go deeper into buying the actual BTC wallet.
1000hrs is equivalent to 41 days, I'm sure that if you are a student and attend lectures all day and make a week for your exams, you afr going to pass than using 41 days to study Bitcoin. The thing is that Bitcoin isn't something you learn a day, Bitcoin is a continues process, it's something you learn new things and the more you use it, the more you understand it, at the end of the day if you spend half your day in this forum, you won't know when you exceed 41 days.
Bitcoin isn't stored in private keys, you nned the private keys to spend your Bitcoin that arr locked on your public keys and addresses, you only need a wallet to manage and spend your Bitcoin and there will ever be only 21 million of maximum/Total supply. You don't need Bitcoin ETF in my opinion, what you need is real Bitcoin else you might not need all this knowledge, just buy your ETF and you don't even need all this explanation but if you buy the real Bitcoin, you will want to learn everything about Bitcoin.