Allow readers to purchase your own products or donate to your cause through your blog. If you have an online store for selling arts and crafts, or you create T-shirt designs available through a clothing website, provide links to those sites. Including a PayPal button for quick, safe purchases or donations is a common way to monetize creative blogs, or blogs that provide free advice or assistance to those who can't afford it.
Advertising is easy to start, making it a popular income stream for many bloggers. However, it’s not nearly as lucrative as it once was and it requires a lot of traffic to be truly profitable. Also, it runs the risk of frustrating your readers (ever been on a site only to be assaulted by the ads?) and making your site look cheap and unsophisticated. Therefore, it’s not a top recommendation of mine.
Once you setup your account on AdSense you will be given a code to add to your blog. This code will automatically display advertisements on your blog from companies who are part of Google’s advertising network. You may see ads from small companies related to your topic, or you may see ads from large companies that are completely unrelated to your topic.