I had a look at the You tube help pages for adding subtitles and closed captions to videos. I found this quite interesting and really helpful in guiding educators how to add subtitles and captions. I like the way in which they provided the video that was suitably subtitled to guide people step by step. 

You may already have to have as an educator a high level of IT competency to follow the guidelines and use Youtube as a learning resource. I think the instructions suit educators who are competent in using IT already or those educators who are learning how to utilise Youtube as a learning resources and ensure that it is accessible for all. Youtube provides some written instructions too and doesn't just presume that everyone can follow a video. 

There may be different guidelines for the same components as people have different interpretations of what accessibility is and ideas of how to ensure online learning is accessible. Guidelines and ways of ensuring accessibility might differ from one institution to another and from one educator to another. I also think that if you stick to one set of guidelines there is a danger of becoming complacent as with everything in education, accessibility evolves and new ideas develop. If you follow one set of guidelines these may become out of date.

I think the resources could be used to ensure as much as possible that online learning resources are accessible. They can also be used to understand more about the accessibility needs of different learners and help to implement change in the way institutions and individual educators provide accessibility.