This probably sounds pretty dumb, but... how do you get out of the select tool? E.x. when you make a square and can only color within it, how do you get out of that function? Thank you so much for answering!
Select menu, Deselect or Ctrl+D (Cmmd+D on a Mac, I assume). Not a dumb question, it is not immediately or intuitively obvious. It almost needs a Deselect button up the top of the canvas when using the selection tools.
For those not reading the comments, zerozekitty has found that double-clicking (selecting a zero area) also deselects when using the Lasso or Select tools (shortcut keys L or M) - thanks, zerozekitty!