Apart from airdrops and bounties, and trading or mining. What other ways can one make money in crypto space? I really like to know maybe one can explore it.
Buy coins with solid fundamentals and hold them for 6 months. This is the unpopular strategy, as humans we are wired to be impatient and we try and make the biggest gains possible in the shortest time possible.
Time in market trumps timing market.
And the most better suggestion to him is that if he invest in ICOs as in the ICo everyone is evident that the profit from selling the bought coins is confirmed. When the coin hit the exchange after the end of ICO then we see the coin at a more higher price than the price of the ICO. Many ICOs provide a discount at the beginning which is also a good opportunity to get the profit from the beginning.