yes it is possible to earn monthly income with Bitcoin/altcoin trading with capital of 0.1 BTC, but for that you need to answer the question how long you have been trading and whats your goal in trading. Keep in mind that Trading can give you monthly income and at the same time it can also Wipe out your all capital.You need to continue your trading studies and research and try to increase your knowledge and skills first and then grow your capital by gaining good monthly income.There are many list of websites that can help you in cryptocurrency trading which are listed in this forum's thread.