To track your ads below ur post, u have to create ad unit with channels directly from your adsense account. You cannot track ads performance if u add ur adsense unit from ur blogger widgets.
Depends what the blog is about but as long as it's not race/hate/bomb making/drugs etc then yes you should be okay to apply. But you with a blog you should ensure to complies with the adsense quality guidelines befere you apply as if you get turned down you will have little chance if you re-submit the site later
Just Finf out more information on google or you can ask problogger.net to learn more aboout adsense..
Google Ad Sense enables you to earn money by placing targeted text and image ads around your content (profile, photos, videos, blogs, tribes and classifieds) on Indyarocks. Google automatically chooses which ads to show based on your content, and you earn money when visitors view or click on these ads.