The recording of the first lecture is now up. The Silverlight Panopto version is at:
The  podcast version has higher video quality and works on Linux, but has some audio sync issues about which I have filed a bug.
The textbook I plan to use in future weeks is: The Mathematical Theory of Finite Element Methods by Brenner and Scott. Imperial has bought the PDF rights to this book so you can access it at: 
I recommend you print chapter 0 and bring it to the next lecture.
The notes I used yesterday are attached, for the benefit of anyone who didn't get a copy. The version below has a couple of very minor errors fixed, but not enough to really concern anyone.
Finally, WPL is almost solidly booked next week, however it is free on Friday morning. PLEASE TELL ME NOW IF FRIDAY MORNING IS NOT A GOOD TIME. 
Regards,
David