It depends on your needs, computer skills are an added advantage in any career. You can still do to add to your list of skills, the more skills you have, the higher chances of success you will have.
I think it's good to learn through courses. I prefer more or less youtube these days. It can be fun to learn from the youtube.as the content is really good enough.
You can also learn a lot of skills from youtube. I am learning R programming tutorials right now. And I may soon apply for data science skills and positions in jobs.
I'm learning through Youtube and google. Well, I've known some basic skills in computer but learning the deeper part like Networking and troubleshooting is different. As well as Networking languages. I just need to know some intermediate datas. So I just use youtube.