First build your blog. Add original / interesting content and build your audience / traffic. For the web, traffic = revenue. If your site start to get hits, you can put some advertisements (e.g adsense, etc), or you can go through product affiliate with amazon books.

There are numerous way to earn money with your blog. But i suggest that you focus on having visitors first.

Wait, wait, wait. That's what it's going to take. You can definitely make money through blogging, but it won't be over night and it won't be much at first. I have seen some blogs in both a saturated niche and one that is almost it's own niche, make no more than $3 a month for the first half year. Good content+views= profits if you are lucky enough.

Like other said above, At this stage focus on the content, design and building relationship with you blog readers. At the passage of time when you have a good flow of visitors, Go for Google adcense initially which will throw something in your pocket. Down the road, You should definitely go for writing your own Ebook and pitch some sales rather then selling some one else stuff (affiliate marketing) but you have to be good at what you offer.

I dropped out of blogging to try making my own Kindle ebooks for a while.
It seems easier because you do not have to write content every day.
And can write a ebook just once and then update it then needed.
But, that is just me.

You need to setup your blog perfactly.next u need 2 write catchy content that attract visitors bcoz content >> traffic >> money. And make ur site seo friendly like submit sitemaps,title optimize,etc.

create a blog with unique content creation and make you blog popular it take a more time to earn a money by blogging.