Is there any way to select everything that is not currently selected?

Question

I want to be able to select certain vertices, apply a texture, and then select the rest to apply another texture. How can I do this?

Answer 1

⎈ Ctrl + I inverts your selection.

Answer 2

This is one way to add many textures to one object that has several faces:

• cycles render
• material tab click "use nodes"
• texture tab click "new"
• click open find texture you wish to use
• click material tab look for surface menu
• then to the right of color click the little box icon
  Color: ______[]<----
• choose image texture
• an up/down arrow appears
• choose the texture
• go into edit mode and face select, then enable texture mode
• click on the first face and hold shift and highlight each additional area
• now press "U" on the keyboard and choose "unwrap"
• then go to materials tab and click "assign"
• now just add more textures and assign to each face