A little too late but I guess it's better late than never, you got a lot of catching up to do though since a lot has happened in a matter of 1 year ever since the pandemic started, with back to back ATHs for 2020 in Bitcoin is crazy and I'd say you cannot miss that part if you'll backread through the events, also, ETH hitting its ATH as well for the year 2020 and with what happened to XRP, best of luck to you my guy.
Perhaps, it is too late, but I think he still has time to invest because many altcoins are not increase so high, except ethereum that already increase more than $1k. I am sure that he can analyze the other coins to find when to buy the coin, so he can't prevent buying at a high price. Bitcoin will be the best coin he can buy right now as bitcoin price is not increasing too high, so he can still buy it or wait for the downtrend to come to the bitcoin market.
The first thing that he needs to check is coinmarketcap or coingecko to find the coin to analyze because the top 10 coin list positions are already changed, and we see XRP is down from that position. But sticking to bitcoin will be the best recommendation from us as bitcoin price will break the next high price, giving us a big profit. But make sure you can analyze better to find the best moment to buy the coin.