Once you have regular views on your blog you can start to convert those views to money.
Serving ads to your users is one of the oldest ways to make money online, advertising giants like google allow you to set up Adsense which enables you to add adverts to your website/blog with ease and start making money.
There are also a number of other providers who will pay you for having their ads on your website. Which you can find on the web.
These advertisements tend to pay either per click or per impression, be sure to read the terms and conditions to understand the payment structure of the advertisements you decide to use.
Always ensure that ads are relevant to your brand, this will help you and the advertiser as it helps the advertiser reach the right kind of people and shows your users content they may actually be interested in.
Also try to ensure that ads are not to intrusive as this may lead to users using your site less or not at all!
Another less common way of making money through ads is through sponsors, you can ask companies and brands related to your brand if they would like to sponsor your website/blog. This will mean you will sell them some advertisment space on your website for a fixed period of time and they will pay you for this.