I agree with the sentiment: if you have no money you will have to spend time and time is money. That said it costs nothing to join the adsense program, set up hundreds of blogs (monetised with adsense) and join adsense sharing article publishing sites. Taken together, if you know what you are doing, these are the equivalent to buying a magazine, paying people to develop content, others to sell advertising and others to market the magazine before paying for the magazine to be designed, printed and distributed. Try doing that in your spare time! Apart from the adsense, blogs and article model costing nothing in the monetary sense, this model produces ongoing income (websites don't have shelf life) and it does not require more and more trees to be cut down. People who say there is no business which doesn't require cash are ignorant of the possibilities or don't have sufficient talent - but that's all right as it gives others with talent (and no money in the first place) more space to develop.
Well you need skills time and money to MAKE MONEY You can start with time and skills but in the end you also would need to spend money ... Freelancing needs no money to start ...
I'll bet you know how to do something that other people don't know how to do, or are willing to do something that other people simply don't WANT to do. Charge money for it. I mean, when you think about it, that's all a job is. Somebody needs something done, and they either don't know how to do it themselves - or they don't want to.