there are really lots of ways. but take note that all needs effort and anything that has value. either skills, things, your mind, or time. the easiest i think are signature campaigns. there is also trading, but you need to be cautious with this one study the mechanics of trading first and make sure you know already a lot a bout it before you go and start trading big amounts. there are lots of articles about trading out there you just have to ask mr.google for it.
Yes there are lots of ways to earn bitcoin as long as you want to and willing to exert effort you can achieve it but I think you can't earn 0.1 btc through signature campaign for one week I haven't seen any campaign that pay that much even in legendary rank.
i mean selling your service always better than selling stuff, as people will pay your effort and it is usually have bigger rates than when you sell goods/digital goods. bitcoin as universal currency are the best way to make money globally . just do more effort.
