trading & tipping.
When you tip(via twitter, reddit, etc) you end up attracting a lot of attention, you'll be rewarded for your efforts in terms of followers which you eventually refer them to your trade tweets. Use referral links or even promote your own coin lol.
When it comes to Trading, it's just like the stock market. Buy low, sell high. Most inexperienced traders play with daily ding-dongs while experienced traders hold for weeks. Altcoins may be considered worthless to some people, but even a $5 investment in BTC>Altcoins will result in some amazing gains. For example, CannabisCoin went through a huge pump around October. It went from $0.005 to $0.05 and it's a perfect example of doing research before those big pumps and holding until the very right moment.