Here's another source: iTunes. Free and for purchase. Covering CS6 and previous versions.
|Results of "indesign" search in iTunes, Mac. Various audio and video podcasts containing tips and tricks.|
|Yes, there IS an app for things InDesign. Several shown here.|
|Here's the next best thing to school: iTunes U courses. In English, Spanish, and other languages.|
|Detail of video topics by Western Kentucky University.|
|Last but not least, books available for download.|