What is CPC? CPC stands for “cost per click.” By displaying CPC ads with Google Adsense, you receive a set fee every time an ad on your website is clicked by a visitor. The cost per click is set by the advertiser. (This is in contrast to CPM ads, where you’re paid for ad views instead of clicks. CPM means “cost per thousand impressions,” where M is the roman numeral for 1,000.)
This is the strategy that most bloggers start with when looking to monetize their blog. However, keep in mind you're not limited to selling banner ad spots (which is generally an ineffective strategy these days). Consider other areas you could rent out: space on your pop-up box, social media headers, the "P.S." on your email newsletters...think outside the box (quite literally).
Write down every topic that you are knowledgeable or passionate about. You'll have a much easier time making money from a blog you are interested in, rather than trying to write content you don't like because you think it will make money. Some examples are hobbies that you enjoy, your career, or some specific and miscellaneous knowledge that you have.
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.