That's a good start, friend. You're putting in $250 for now, and then you can keep adding more using the DCA method. Before you invest any money, it's important to do your research so you understand how it all works.

Bitcoin can be volatile, but its volatility is different from other cryptocurrencies. When you invest $250 in Bitcoin, you're buying a piece of that coin. So if the price goes up or down, the value of your portion changes. For example, if one Bitcoin is worth $100k and you have 1 Bitcoin, and then the price drops to $70k, you still have 1 Bitcoin, but it will worth less in the market.

So to answer your question, if the price of Bitcoin drops below what you bought it for, you'll only lose the value you paid for it, but the amount of Bitcoin you own stays the same. Also, it's important to know that Bitcoin works differently from shares or Bitcoin ETFs. While both involve investing in Bitcoin, they have differences in what they represent, who owns them, how they're regulated, how easy they are to buy and sell, and the level of risk involved.

1 Bitcoin = 1 Bitcoin so in your situation, your fraction of a Bitcoin will stay the same unless you spend or sell it. The dollar price of your holding can change, Bitcoin is very volatile although as time goes on the volatility is expected to be less so. Bitcoin is an inflation slayer so your $250 is very good to be left in Bitcoin if you can stomach volatility. Over time you will definitely be in profit.

Did you mean the real Bitcoin or Bitcoin ETFs? Bitcoin ETFs works same like stock.

But if you talk about Bitcoin, that's completely different. It's true in case Bitcoin worth $0, you can still own your coins. But if stock or ETFs went to $0, you doesn't have your share again because the stock exchange already delisted the stock.

It means you own nothing and you can't do anything, but in Bitcoin you can send your coins regardless the price is and no one can control it.

It is called holding. Bitcoin is not a shit coin. You can not lose all your money. Bitcoin price will increase back and you will gain. With everything that is going on, it is better to invest than to panic.

1 BTC = 1 BTC.