Moving objects or drawing on just x or y axis
In PS I would just hold down a modifier key like Ctrl or shift and that would lock my movement to the X or Y axis so I can line things up nicely. Is there a key to do this for the move tool or the drawing tools to draw square borders?
I should expand on that. If you use the Direct Draw Straight Line tool while holding Shift you can draw in angle steps. You can also do that with the Polyline. If you want to do something with pen pressure on just the X and Y then you can set up a ruler with the Polyline and Shift or use a Perspective ruler. Simply hold Shift while laying down the X and Y then use the Object tool to select the ruler, right click, and Infinitize.