In certain (environmental) circumstances, it is not handy to use audio or headphones when following recorded training videos. In my opinion it would be very helpful to have optional subtitles in the training videos.
We are actually working on that, and you should start seeing some of the videos show up fairly soon with closed captions for non-native English speakers or people with hearing disabilities. They could also be used for areas where audio is prohibited or unavailable such as you describe.
Xamarin University | Curriculum
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