How to earn money from blog or blogspot ?

About the Blogger "Earnings" 

The Earnings tab in Blogger makes it easy to enable Ad-sense ads on your blog. Once your account has been approved, you can go to the earnings tab to go to your AdSense dashboard.You receive the earning in your bank account or through draft.While creating adsense account you have to clearly feel the details in which you want to get the amount.

Earning tab what is earning tab:- Its the tab to enable your adsense account.

In selected country you cannot create a adsense id for few month .

If the signup for adsense is active then only you can sign up.

How to active google adsense:-

If your email id was submitted for adsense already if you have adsense then the adsense was self active.

How much you can earn and whats the medium to earn:-

• Page views: A page view is generated every time a user views a page displaying Google ads. We'll count one page view regardless of the number of ads displayed on that page. For example, if you have a page displaying three ad units and it's viewed twice, you'll generate two page views and six ad unit impressions.
• Clicks: The number of times the ads were clicked on in the given reporting period.
• Page CTR (Click-through rate): The number of ad clicks divided by the number of page views.
• CPC (Cost per click): The average amount paid by the advertisers for each ad click.
• Page RPM (Revenue per mille): This is revenue per 1,000 page views. RPM = (Page views x CTR x CPC) / 1,000