If air-gapped transactions are truly offline and detached from any networks, what measures can users take to guarantee that their transfers are convenient, fast, and error-free? Isn’t it challenging when they have to depend on manual methods like QR codes or SD cards for every single Bitcoin transaction?

If the market remains volatile or enters a prolonged downturn, wouldn’t adding sector-specific ETFs, such as technology and healthcare, increase risk instead of ensuring stable long-term returns?

I opened a trading account and am planning to invest $3,000 per month. My plan is to allocate 20% to blue-chip stocks like Apple (AAPL), Tesla (TSLA), and Amazon (AMZN) and 80% to a VOO. Is using dollar-cost averaging (DCA) a strong strategy for long-term investing? Alternatively, do you know how I may strengthen my portfolio for higher returns? Thank you.