How can I earn money online without spending money from my pocket or bank?

Sell things on ebay, etsy, etc.

Before you fall for a scam and pay some one hundreds of dollars for application fees please try to find a book called Working from Home Using Your Computer and Your Brain and read it it has good information you can actually start to use the day you get the book.

A lot of interested traders are asking themselves the question if you can really make money with binary options? The answer is that you can indeed make money in binary options trading. Learn here https://tr.im/gXLVR

Obviously this is a perfectly legitimate question considering that most people have not traded binary options in the past and generally believe that investing is a very difficult activity.

However, you will have to put an effort into it. You will have to learn money management, reading of charts as well as the usage of indicators.

dont forget to be realistic - you'll have to do some work whatever method you follow
I've been studying different systems and discovered an awesome resource at Secret Profit Crusher (check it out on google)

Try payfriends, you get money by getting people to join up, it's really simple and easy and it gets you money, worth a shot if you like, just follow the link, it's a free app so no harm really :)
payfriendz.me/geeloux

I only know about ptc sites but most of them are scams or it takes too long to start earning from them.