Surveys are one of the most popular ways to make money. This one might not be the way to make good money but definitely is one of the easiest ways to make money that needs no skill and anyone can make it. But few things have to be kept in mind before you start doing surveys for pennies.
You geographical location is the most important factor. If you stay in a tier 1 county, you are lucky as many good paying survey sites work for them. And even the pay rate is better there. It's not good for tier 2 and tier 3 countries. So, choose a site that works for your location.
You won't get rich by survey sites. They are easy money but not a good pay. So, you need to keep other options to earn also along with surveys.
Choose the survey sites that work for your location and are legit. You can find such information here on Trendri and other forums like Forum coin. Register there and get started. Some survey sites send invitations for surveys to your email while on others, you have to visit them and find the available surveys. Answer surveys and collect points to reach the payout. You might be qualified for a survey or might get disqualified in between. That's another frustration with surveys. You need to have enormous patience. And many a times it can be boring and monotonous.