- Take computer science classes.
- Online free training from places like Udemy.
- Google every question you have.
- YouTube tutorials.
- Start a project and see how far you can get with it. You will learn many new things to get around obstacles.
- Code challenges (Leetcode, Hackerrank)
And here are some ways I have used:
- Reading books about computers and the history of technology.
- Following experts you look up to on Twitter, GitHub, and LinkedIn.
- Participating in hackathons.
- Competetive coding/CTFs if you like cybersecurity.
- Look at many different company postings for the jobs you want to see which tech skills they desire.
- Pay attention to tech news websites.
- Open source development / bug bounties.
The more familiar you are with the culture surrounding CS, the more you will know WHAT to study, HOW to learn it (the best resources to get that material), and WHY you should even pursue this material in the first place! Hope that helps a bit.
To add to the great feedback by everyone else here. I'd also say look into Salesforce free online training in the Salesforce ecosystem. You can get badges and work towards certifications. There is a hot market for Salesforce experts.
Hands on learning is an especially important skill to have, and a project can be a fantastic experience to put on a resume/CV. Think about if there are any problems or opportunities you currently see in your day to day that can be solved or bettered with computer science. If you want a more structured project approach, courses like Udacity have coding projects that will help you with hands on learning.