Description from the website:
Caltech and The Feynman Lectures Website are pleased to present this online edition of The Feynman Lectures on Physics. Now, anyone with internet access and a web browser can enjoy reading a high-quality up-to-date copy of Feynman's legendary lectures. This edition has been designed for ease of reading on devices of any size or shape; text, figures and equations can all be zoomed without degradation.
These would make an excellent accompaniment to the audio lectures, which are available via Amazon (and other means). I'd bet the combo beats any modern physics MOOC, and many university basic physics courses.
Been quite busy settling into Vienna, hopefully will have time to update the blog a bit more often in the near future. Coming up: part four of the Postdoc in Vienna series: settling in.