Which currency do you recommend for someone who has never bought any or is a beginner?

Most common mistakes of newcomers on this platform.
BINANCE
CONVERTING currencies charges you a commission.
If you are one of those who is changing their capital from one cryptocurrency to another, you are losing money. Note that each exchange has a transaction cost which is immediately deducted when performing the transaction.
If you are new, do not move your assets constantly; conduct research and invest in the cryptocurrency of your choice and wait for results.