Now  u have registered with Google Adsense. If u have got confirmation mail from Google to ur Gmail account u follow these steps to get Adsense code from Google.

Step 3: Log on to http://www.Google.com/Adsense and login using ur gmail User name and Password. Now Click Login button

U will go to Reports tab. Now click on Adsense SetUp tab. U will see these things..

1. Adsense for content
2. Adsense for search
3. Adsense for referral
4. Adsense for Mobile

Now Lets Start with Adsense for content. Click on Adsense for content.

U will go to Adsense for Content page. Choose Ad Unit radio button.

Now Choose the format, color and click continue.

Adsense for Content  where u can select the channels, Now u just can leave that and click continue.

U will come to Adsense Unit name page, now if u click Submit and Get code.

In next page u will get generated code under  Your Adsense Unit Code which u can either copy and save it in text file or html file. Or Else paste this code into ur website where u are able to edit html code.

If u have saved it in html file open the file after 10min. U will see the ads on ur page.