In short form, it's the study of computers. Computer Science starte in the 1960s. Computer Science is the study of algorithms, data structures, computer & network design, modeling data, information processes, and artificial intelligence. Computer science also comes from mathematics and engineering and uses techniques from queueing theory, probability and statistics, and electronic circuit design.
Sounds like talking to a brick wall. It's difficult to start but it gets easier as you learn. Listed on this page, I have free and paid courses. The annual pay for this job is anywhere from $138,000 to $145,000.
In this section, you find courses available. There are a lot...so please don't skim through them.
This website talks about the different kinds of Computer Science. It's really useful if you're stressed about how to start.
BritannicaBrittanica is the best webpage to use to learn about anything. It gets straight to the point.
Open LearnOpen Learn offers a free course and a free certificate. This is great for beginners.