In order to measure your success you will need to know how many people are visiting your website. The most common way to do this is to use Google Analytics tracking code. Here are a few steps;

Sign up for a Google Analytics Account - If you already have a Google related account then you may be able to add Google Analytics with your existing account so that you do not have to login seperatly all the time.

Once you are signed up with Google Analytics, it will offer you a code to place onto your website.

Place this code on your blog web files - You need to open up a file called footer.php with Notepad, Dreamweaver, Word or some text editor. This file is found in the applicable themes folder which is in the wp-content folder. The footer.php file will have grey italic wording letting you know where the Google Analytics code should be placed. Copy and paste the code into this file, save it and then upload this file.

You can verify that the file has been added by going to your blog homepage and selecting view / page source in the Firefox browswer or view / source with Internet Explorer browser.

Note that every time you change your blog theme you would need to add this code to the footer.php file as the footer.php file is replaced for ever theme used.

Another way to confirm that you have added your code properly is to log into your Google Analytics account and check to see if  it is collecting traffic data.