How do I set up my system so I can type&view those characters

Congratulations, you are lucky, this is 2013, and it already is set up. However, if find that you have – against expectations – trouble with something, describe the problem in detail so that the trouble can be shot.

Update: Select from the keyboard applet "English (US, international with dead keys)". Type AltGr + [ for «, type AltGr + ] for ».