Hey Bob,
Glad to see another person wanting to learn how to program...and in AutoIt
I made the bot ~Ellipse~ after about 1yr of "Studying" trying functions of AutoIt. What I did was try and make the simplest of programs:
Make a msgbox with options of "Yes" and "No" buttons, and finding what they pressed to then show another message box showing what you pressed.
Code:
Eg.
Messagebox says "Press yes or no"
I press Yes
~"Program gets input of what I pressed"~
You pressed the "Yes" button
Now, as Real-Death pointed out, very kindly

I have made a 2 part documented tutorial on Auto-It starting with functions/variables and then moving over to mouseclicking.
I have not made one on pixelbased functions as I do not use them, but rather use Control bots "Background Working Bots (you can minimize conquer and it will still work)"
Here are my AutoIt tutorials, I hope you find them helpful
NOTE: Some includes will be different, especially in the GUI section as #include GUIConstant.au3 is no longer supported. If you need any help in this area give me a buzz
Part 1:

Part 2:
Hope all this information is helpful to you

And once again, feel free to PM me with any help or just send an email or add me on msn.
~:Hiyoal:~