Bitcoin is still under $30k and still above $20k, of course it's not too late,
if you are still in doubt, maybe you can buy bitcoins or altcoins by accumulation,
so that the risk is smaller and of course make sure you have to divide your capital and don't buy 100% of bitcoins or altcoins .
It is not late to invest, the price of the market is still fair to buy to invest. But since he is not very experienced investing it will be better for him to invest with the amount he can afford to loses. Bitcoin is the most reliable coin for inexperienced people to start with for investment. It is not advisable for beginners who are not familiar with the market to consider investing altcoins as a good investment because the risk involved investing altcoins is high. It is better to stick to bitcoin and get more experience before thinking of investing in other coins.