Updating WordPress on a regular basis is important for reasons of security, modernization and stability. If a new version of WordPress is available, you can’t miss it, as you will see a message at the top of almost every page of your administration panel. See image(s) below:
It is also important to update the themes and plugins you use within WordPress. Like updating the WordPress core itself, you can update plugins and themes with a one click method. To do that, go to the Updates section of your administration panel. See below:
If there are some plugins or themes that need to be updated, you will see them on the updates page. Select all the plugins you would like to update and then click on the Update Plugins button. The same procedure for themes.