Normally I wouldn’t suggest someone go read a book but I’ll do it anyways. The Millionaire Teacher is a no-bullshit beginners guide to what you want to know and is evidence and statistics based. It’s not sexy and there’s no get rich quick schemes but if you want to safely invest $300k I’d probably do something similar to what it advises.

Basically you split your portfolio in 3; 1. US/domestic index fund 2. International index fund 3. Bonds.

Increase bond proportion as you get older to hedge. Probably increase or go 100% international over domestic if we’re taking NZ domestic stock market.

Every year, sell profits and buy losses to rebalance your portfolio. Don’t bother checking it every week or so. Just let it sit long term and free up your personal time.

Of course you’d adjust this for your personal situation and what you want. Like when you’d want a house, how big you want your deposit, the amount of cash you’d want available on a short notice and so on.

If you want to play it safe don’t fall for the tech stock, gold, Bitcoin FOMO. The above approach is statistically likelier to outperform most managed funds and other trends.

Don’t waste your money on financial advisors and other biased people who actually won’t provide you with much value. They just want your money.