This article would be very useful for newbies, but there are many ways described in this article not that useful. Anyway, i believe the best way to earn bitcoin are through trading and participating in bitcoin signature campaign.
Faucets,airdrops and bounties are not useful anymore,we just have to stick with bitcoin to earn bicoins without any capital or can be more profitable through trading it.
What do you mean by sticking in bitcoins ? Bitcoin is a crypto , a currency not a job . Or maybe you mean to say bitcointalk ? Working on sig campaigns and bounties on this forum does not need a capital aside from your hardwork and time . If you earn you can use this funds for trading or investing if ever you want to grow your coins more evenly .
I only know a number of ways to get this bitcoin, for example by mining bitcoin, but this way we have to set up some tools to mine this bitcoin and also need capital
Mining nowadays can now be also done on any device including mobile phones , laptop and pc . Some are plug and play , you dont need to set up any tools and you dont also necesary need a capital to be able to get started . The only problem is that mining is becoming more less profitable and fully depends on what device or mining hardware that you are using .