Scripting Tutorial?

Is there any scripting tutorial that says what every part of every function and statement does? I can only find them for hexen (which is useless to me). I need for the zcommon and such

I think many of the Hexen functions also applies to DooM. You can go to http://zdoom.notgod.com and download ZDOOM's scripting reference guide at the download page.

That is very incomplete. It's good as far as it goes, but it doesn't even have basic stuff like Spawn_Thing or Thing_Spawn or whichever way it is :)

Right now I am using wadauthor to get a partial list of the arguments of the functions/statements, but many of these take up more room than is allowed in the list box I am viewing them from which is this big
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:)

Have you tried the Hexen Technical Specs (http://www.cco.net/~arne/hexspc09.doc)? It's old, but it sure covers the basics.