Most videos are linked here twice- the first [bottom] video will take you to YouTube. That link should be accessible more universally on other platforms, but is blocked here at school. It also gives you access to YouTube's comment system. The second [top] video will take you to the video as posted on Google Drive; this video should be accessible at school [streaming] or home, but might not work well on hand-held devices [like tablets and other smart devices]. In between the videos will be a link to the original lecture presentation, however frequently when it is uploaded to Google Drive some formatting changes are made, reading or printing the notes is probably not a good replacement for the video. Later in the school year when you get fill in the blank notes, those will also be posted in-between the two videos. IF YouTube is ever unblocked then I will stop posting to Google Docs, furthermore, if I run out of online hard drive space, old Google Drive videos might be removed form the online hard drive without me taking the time to edit old video links below.