One of the most important things you can do to help your site get properly indexed in Google is to sign up to Google Webmaster Tools. If you already have an account with Google such as gmail, you need not create a new account.

Once you sign in to Google Webmaster Tools, there you can find all kinds of useful information about your site(s). You will need to do a couple of things first.
1. Enter the URL of your site
2. Verify that you are the webmaster of that site (i.e. you have access to the server where the site resides)
3. Refer Google to your site's sitemap (preferably in XML format)

The first two steps are relatively simple, but the third step is more important than you may think. In the sitemap, you can tell Google:
-    About the pages on your site
-    The page priority of each page
-    How often you change the content on that page
-    The last time a page on your site was modified

These details are very important because they will determine how often your site is crawled by Google and which page is the highest priority.

Below is a sample entry found within an xml sitemap recommended by Google.




http://www.your-site.here.com/
1.00
2008-12-04T20:37:34+00:00
daily




The first part is where you add your URL. Then the priority, 1 being the highest. All others are usually below 1 (i.e. 0.60, 0.75, etc…) The next is the date of the last modification of that URL and finally the frequency that you update this page.

A great place to auto generate a Google recommended xml sitemap is xml-sitemaps.com There you can just enter your URL and generate an xml sitemap. Once you have done this, edit it as you please and upload the sitemap to the server that you site resides and refer to it in your Google Webmaster Tools account.

Viola, you have now verified your site and told Google the pages on your site, their priority and how often they are updated.