Basics of AS tutorial

Hey guys i am currently writing a tutorial on the basics of [color=black]AS. At the moment I have:[/color]
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[size=3][font=Times New Roman]Event Handlers & Trace[/font][/size]

[size=3][font=Times New Roman]Variables & Dynamic Text Boxes[/font][/size]

[size=3][font=Times New Roman]Ifs and elses[/font][/size]

[font=‘Times New Roman’]Arrays[/font]
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[font=‘Times New Roman’]I need to know what else would be a good idea to put in. [/font]