Updating your WordPress when a new version is available is very important for a number of reasons.  When WordPress is updated, the security for the software is updated as well.  If hackers have found a way to exploit the security of the WordPress software, a new update will frequently "patch" the security hole to make your site more secure.  Also, a new version of WordPress is likely to have new features as well.

How do I update my WordPress?

First, log into your WordPress admin dashboard to see if an update is available.  Before updating, it is recommended to backup your WordPress website.  If there is an update available, you will see a message similar to this one at the top of the page:

If you see this message, click on the "update now" option in the link.  A screen similar to this one will appear:

Click the button highlighted above that says "Update Automatically."  WordPress will download and install the update for you.  Once it is complete, you will receive this message:

Now if you go back to the Dashboard page, you can confirm that the update was complete:

Your WordPress is now updated.  After you have updated, visit your website and make sure that your pidgins and widgets are still functioning properly as some WordPress updates will require your plugins or widgets to be updated as well.