Lecture #5 looked at localization.
There are two sections of notes available:
and then my own notes, derived directly from the textbook: The first are the colourful powerpoint notes derived from the book, the second are my monochrome slides which go into the detail of Markov and Monte-Carlo (particle filer) localization.
The lecture covered material from Chapter 5 of the textbook. You should read this if you have the textbook (the textbook covers much more than we had time to look at in the lecture).