I don't know if it exists or if this is the appropriate place, but could you publish a guide to using cryptocurrencies? in several languages of course.
As far as details I suck at being a teacher and don't feel like writing a paraphrased "For Dummies" book (it probably exists) but here's a cliffnotes version:
1 Find an exchange (I mainly use Coinbase).
2 Link your bank account to them (in the US it's the bank and routing number found on the bottom left of paper checks).
3 Transfer fiat currency from your bank into your account on the exchange.
4 Set up a crypto wallet (doesn't have to be on the exchange as well but that is most convenient).
5 Use that to convert some amount of your account balance to whatever crypto is needed and add that to your wallet. BTC and Ethereum are most popular, though are used less for currency and more for simply day trading by those that take advantage of the volatility. USDC or Matic are more popular for currency as that has no volatility due to being pegged to the US $.
6 Your wallet number is similar to a bank account number, anyone that has that and also has a wallet can send you crypto and vice versa
7 When you need real world money it's the reverse: Your wallet balance is converted back into fiat on your exchange account and then transferred to your bank account (ideally you were smart about it and took advantage of a 5-10% upswing that more than covered the transaction fees rather than a real world emergency that forced you to withdraw it at less than the price you bought it, if you didn't buy a stable coin).
The downsides: Fees tend to be higher on average than credit cards, usually around 5% in my experience and I tend to not bother with transactions smaller than $20 to help with that (the banks charge the exchanges 3% or so per transaction, and they need to at least cover the costs of running an exchange and other expenses so will be higher than that with various fee structures).
Also, come with some patience. Transactions take time to hash out despite the massive chunk of the global power grid devoted for that task (I guess another downside if one is a hippie and cares about global warming, it's about 100,000x less energy efficient than credit cards). Instead of seconds transactions can take hours and even days are not unheard of, depending on how busy the network is and how far down the hash queue your transaction is (which will just take longer as more people adopt it, that's one of the main things preventing widespread adoption of crypto, at least until quantum computers are more common and a new crypto designed just for them is invented).