Digital literacy is having the ability to be competent and comfortable using digital tools and technologies. You should also have the ability to search for and learn from digital information, also to create digital content, whilst collaborating when appropriate
YouTube is a very good tool for learning online. One of the best things about YouTube is that it is available at any time of day or night, provided that you have an internet connection. This means that is you work late, or only have time early in the morning, or need help right away and you cant get hold of one of your tutors then YouTube will be available with its almost infinite selection of videos. Another great thing about YouTube is that you have the ability to pause and rewind any of the videos, so if you have missed or forgotten a part of a video then you can simply easily go back to it, you can also save videos into a playlist, or go back onto your history to watch any video again. However if you have a question about something that was not mentioned in the video, you can leave a comment, but it may not get answered as no one else may know the answer and the video creator may not see your question. Another downfall is that the information is as only good as the person talking about it, if they have a fact wrong then you will also be misinformed about the fact.
In the past I have used YouTube on several occasions to help me to understand something. I have mainly used it to help me understand how to use different pieces of software, such as shadow play. This is a piece of software that is used on computer to record yourself playing games, you also have the ability to record the last 5 minutes of your game play. I also used it to understand how to use OBS, this is used to stream a direct video and audio from your computer onto sites like 'twitch', where people can watch you in real time do many things, such as play games, play music, paint, draw, and many more things.