Especially with a new site, but sometimes even with an old site, it can take days to get posts indexed in Google's search engine. Though everything will eventually get indexed with time and good internal linking, it's also possible to tell Google that you've got a new URL they need to index.

In this training you'll see a new URL get indexed in less than 2 minutes! I checked after the video done, and I was also ranking on page 2 after Google fetched it, so if you have a decent site, you could see rankings appear almost instantly.

This is not something I use often because it's not always necessary, but occasionally it can speed things up for those of us that are impatient :)

Let me know if you have any questions. Here's a training from Welshy on how to Add and Verify a Domain in Webmaster Tools.

Google Webmaster Tools: http://www.google.com/webmasters/tools/