a list neatly organized? :) that is actually something that has come up a few times around here... getting a wiki going that is organized by what users aim to do. but it doesn't exist yet. there is more than 1 tutorial on thematic now. themeshaper.com itself has a ton of good content. as do a bunch of other places. though i understand that can be overwhelming when trying to start out.
this is a diagram that i find enormously helpful to figuring out where stuff is and what functions are going what.
http://bluemandala.com/thematic/thematic-structure.html
then the other thing i do is wade through the extensions folder in the thematic library. unzip thematic> library> extensions. that is the beating heart of thematic. never change anything there, but you can always look in there to see why things are behaving as they do and you can copy functions from there into your functions.php and mod them there.
take this example
function add_html_to_header() {
?>
<div>Bacon!</div>
<?
}
add_action('thematic_header','add_html_to_header',8);
it adds the function called 'add_html_to_header' to the thematic hook called 'thematic_header' in position #8... if you look at the diagram that means it is after the branding closes (after the logo and site descriptions). most of the time you don't use that number, but in the thematic_header there are other things already in a specific order... think of it as coats already on hooks, so you need to use an empty hook.
adding something to the sidebar is the same concept... you define your function then use add_action to tell it where to go... using one of the many hooks (most of which are in the diagram)
