ZBrushCentral

Editing and drawing

so I'm watching this

http://www.pixologic.com/zclassroom/homeroom/tutorial.php?lesson=beginner
and reading this
http://www.pixologic.com/docs/index.php/ZBrush_4_Shortcuts
I get into draw mode but then I can’t get back into edit mode. My T key doesn’t switch modes and Q does nothing.
I’m confused how should i switch from editing to drawing mode??