The Splunk support portal is available at http://www.splunk.com/ (look for it under Support). The portal is where you can become a spot-on "Splunker" by creating your own account to:

You don't have to pay anything to create an account of your own. You need to just access the website and click on Sign Up Now, as shown in the following screenshot:

Here, you just need to create a (unique) username and password (and, of course, agree to the Splunk website's terms and conditions).