Topics appropriate for this forum include:
Example and tutorial requests.
Questions involving the drag and drop actions (not GML).
"How do I ..." questions. (e.g. "How do I make the player shoot left and right?")
"Is it possible to ..." questions. (e.g. "Is it possible to make a game like Mario with Game Maker?")
General GM editor issues. (i.e. configuring Game Options, adding folders, using the sprite editor, etc.)
Issues found in the manual that just need a little bit more explaining for you to understand.

cheers
cob