There are opportunities for someone who have no skill to offer online but one thing to note is that you can't earn a full-time income here online. But that doesn't mean that it's not possible for one to earn a few bucks as an unskilled individual.
First and foremost, the person in question can try out different paid to post forums. There are two things such a person get to benefit from this, one is the money you get to earn and secondly is the knowledge. You get to earn by creating threads and post on these forums just like we do here and I believe they have a wide range of options for you to choose from while making your withdrawals. The knowledge aspect in the sense that it will serve as an eye opener to the online world and by interacting with forum members you will learn of how the online market works and this will help minimize your chances of falling a victim to scam sites.
Apart from posting forums, we still have other sites like survey sites where you get to earn from by completing surveys. As a beginner, it is also important to note that if you're not from the tier one region, you might probably not stand a chance to earn from this kind of websites.