join some signature campaign , but 0.1 per week is hard i think
0.1 per week from signature campaigns is near impossible unless you post like an absolute madman
There are no signature campaign that paid 0.1 btc per week. I think the highest signature campaign you can get is .04 btc assuming you are Legendary already with a high trust. Only logical option for the OP really is to do trading but he also need a base money to start with to earn 0.1 btc weekly.