Whether you are using the simple or advanced WordPress, this applies (however note the examples in all these tutorial show a Bluehost hosted version, so the free blog platform may look different.).
This tutorial demystifies the workings of WordPress so you understand the main functions, walks you through the basics of how WordPress works and a few things to do to get started with your new site.
Watch the tutorial here: Using WordPress for first time
(note: Marianne spent days trying to work this stuff out when she first started simply because no one had created this video! Taking the 5 mins to watch this will make your life much easier)