At your rank you can begin joining in signature campaign even if you don't have avatar yet but if you rank at full member you can wear avatar and you can earn btc on their or altcoins and try also a social media campaign i know not big enough to earn but just try but dont forget read always the rules of the campaign you joining that is important.
yes your correct he can earn a lot on signature campaign just be patient until you reach your highest rank from that you can earn what would you like legendary is the best among the rest. There are many ways how to earn bitcoin from online there are jobs that pays bitcoin as your salary and there are blogging review that's pays bitcoin even gambling is a choice but not good for me.
Getting bitcoin from signature campaigns is still a prima donna on this forum, but you still can earn bitcoin in other ways, because there are still many ways to earn bitcoin from online. Even before i just earn bitcoin from gamble and i am very active gamble on sports betting.
For start getting it from signature is ok. Still prime way of earning bitcoin at least on this forum (dont remember if any have something many tried but failed). How with increase and rapid grow of social media this now represent another easy way to earn not just bitcoin but more some other coin, mostly ICO cuz they offers more services in this area. From back in old days when this was so called young, faucets and giveaways were some of ways to get come coins. How there is no easy way to get at least no anymore, you need work mosly hard one, and need good knowledge in crypto currency globally. With this they are lost of possibilities to earn and to get coin of any kind for you/his/mine work.