I struggle to understand technical things in cs? What can I do to improve?
Here are two pianists


Lovely lady 1
Lovely lady 2


Do you realize no 2 was once no 1?

Here's an In between  stage

To get a handle on the issue you need 
ten thousand hour rule

You can reduce 10,000 hours to 1000 hours and go from world class to normal professional. Perhaps 1000 to 100 and go from professional to modestly proficient.

But even@100 that's about classroom time of two typical university courses. 

Put another way musical proficiency takes about 10-15 years of work, medical 5-10.
Computer/software takes 3-4. Maybe you can reduce 3 to 1. 

Have you put in that 1 gruelling year of work?