1. Google AdSense:
This is superb! Google AdSense gives revenue-sharing opportunity to those who have website or blogs. It allows publisher who has the desire to run ads on their website that are relevant to your content and when a visitor clicks on an ads, Google pays you. The ads are dynamic and Responsive. Once you start getting visitors to your blog or website, you can sign up for an AdSense account. Google then evaluates your website or blog whether it meets the high quality standards or not. This process can take anything from 24 hours to 48 hours. After your account is approved you can start displaying advertisements. You will be get paid every time when someone clicks on ads that are displayed by Google Adsense. This is called as CPC (Cost Per Click) advertising.
Youtube gives you an opportunity not only to make income but can make you an internet celebrity. Anyone can start their YouTube channel and show their skills with the help of video. You should have interest in what content you are making. Once your channel becomes popular and when you meet certain condition of YouTube then you can start earning hundreds or thousands of dollars through ads in your videos. All you need Gmail account and then start your YouTube channel, create video through mobile or camera, upload you videos and wait until you get good number of subscriber to monetize it. After meeting the certain conditions of YouTube partner program, apply and start earning after getting approval.
Google Opinion Rewards app offers an easy way to earn money online by taking survey which further you can use to buy paid apps or any Play Store content. It is available on Android Play Store and iOS App Store. It allows you to answer survey questions and it will notify you when a brief survey is awaiting for your input and once your completed it, you will receive Google Play Credit but you have to take survey within 24 hour else it will be expired and you have to wait until next Survey come. For each successful survey, you can earn up to $1 and topics can be anything from your favorite hotel or product reviews.