I think there is no secret to earn 0.1 bitcoin per week. Because you can do that easily by joining a signature campaign and do some task to earn bitcoins. Join a giveaway also works though.
Only signature campaign will never give him that higher income as we know that the payouts are limited and at this stage there are not any higher paying campaign that will pay 0.1 btc per week even to higher rank accounts.
Yes indeed the payment of the signature campaign no one is paying the highest 0.1 BTC per week. Very unlikely have accrued from signature campaign. To help get income 0.1 BTC per week can be assisted by trade or investments, except that if it has the expertise to sell expertise. If the do it all definitely be able to easily get 0.1 BTC per week.