I would like to know if anyone of you earns 0.1 BTC per week or even more? Is this possible and what is best way to earn it? Your experiences, suggestions and advices are very welcomed.
I think it really depends on how much you have to begin with in the first place.
If you talk about trading, then perhaps having 10 or more btc, will probably be pretty easy to get you 0.1 BTC per week. Have you tried
1brokerbtc.co before? They have a social trading feature which can get you some passive income by following the popular & profitable traders there.. It's almost a hands-off approach once your settings are in place, so I think it's a really great system for those who do not have all the time in the world to follow charts and markets and trade for themselves.
Besides that, you could try working on your referral base for websites like exchanges or other affiliate systems; things like bitmexbtc.co , 1brokerbtc.co, and etc all give pretty decent referral reward if you manage to build up your referee list. I know a friend who managed to get over 100 referrals by running a good PPC campaign, now earning him easily more than 0.1btc. If you put in the effort, you could easily achieve the same.