Valid URL: If you openned an account through blogger as I have mentioned before, then you are good to go. Otherwise, if you manage a website, you should submit your URL when applying for an account.
Fully launched website: Before submitting your URL, you must ensure that your site is live and functioning properly.
Unique content: Google wants and loves visitors to sites in the AdSense network to have a good experience, and so they encourage that you publish content that’s interesting and unique. Avoid using “doorway” pages created just for search engines, or other cookie cutter approaches such as affiliate programs with little or no original content. If you’re participating in an affiliate program, give people a reason to visit your site first.
Supported language: Google supports many type of languages and is constantly working to provide targeted, relevant ads in more languages. If for some reason your language is not supported by google then they will not be able to approve your application.
Pay-To Sites: If your site participates in programs that compensate people to perform activities that drive traffic to you, google is very strict in this and might not approve your application. Some examples of these “pay-to” programs are sites that encourage users “to click” or “to surf” or “to read email.” In addition, you shouldn’t encourage others to join these programs in the content, links, or third-party ads on your site.
As you can see, it is quite simple to follow the requirements of google for AdSense. AdSense tips for the debutant.