There may be people that think that the only way to make money online is to do it fraudulently. It is true that there are fraudulent and illegal ways to make money both online and offline, but there are plenty of legitimate ways to make money as well and most of the money making sites that you come across will be. You do need to make sure that you are acting within your local laws though. For example you will need to declare income for tax purposes and check that your current employer is happy with you doing extra work like this.
Spotting work from home sites which are acting within the law and will pay well is actually pretty easy. You should be able to find details of the company on their website or if you search for them. It is best though to see what others are saying about them. You should be able to look on money making websites, blogs and forums and find out about all sorts of work from home companies. People will comment on companies that have not given them much work, not paid them or paid very low as well as companies that they like, get paid regularly form and get plenty of work from. It can be a really useful way to find out about what is available as well as which companies you can rely on.
You will then be able to see what sorts of jobs are out there that you can do and this will enable you to choose some that you would like to do. It may be that you want to get your head down and do long pieces of work such as writing books or programs or you might just want smaller jobs like watching videos or doing surveys. There are many things available to do and you just need to find one which you would like doing. The great think with being self-employed is that you can try all sorts of different things and then decide which you would like to do regularly. You might prefer to focus on just one type of task or prefer to have a variety of different things to do, both to keep things more interesting and to give you more of chance of earning money.
It is worth noting that online work may not pay as much as a regular job. Many people do not mind because working from home is much more convenient for them and so they are prepared to cope with the lower pay. For some they cannot work outside of the home so any income is better than none. If you look around though, you will find that there are better paid jobs out there but as with regular work, they will depend on you having certain skills. It may be possible for you to learn those skills or you may have to just pick jobs which do not need those particular skills for them.