It depends on what you want to be in the next 3 years. I will advise you to read this blog
https://www.computercareers.org/, here is a lot of information about the IT domain and their jobs. You can choose your favorite one, take knowledge in it. Now there are so many courses on the Internet that you can learn some basic information overnight. I am this field for years, I am a project manager. I have my team with which we create apps for Appstore. It is interesting and I love what I do. Moreover, it brings me a good income.