I am titled with Software Engineer, but I am very scared that I did very little in engineering things.
I read lots of API for my work, and code the logic to achieve various functions as required.
I am good at learning to use tools/APIs.
If someone ask me to explain graph theory or tree, I can not give a word.
I did not read much C/C++ language in university. I never fully understand the pointer.
I never read tons of books in Computer Science in university, I just studied to finish the home work and exam papers.
Honestly speaking, I never finish reading a complete book on data structures and algorithms.
So no matter how many books I read for now, it is just not enough.
More important, if I am not concentrating on my weakness, I can not improve.
Read to correct ideas, read to overcome weakness.
Practice, practice, and practice.