Again, I didn't start pursuing CS in college to get employed. I started learning more about computers, learnt to code websites and then went back to figuring ou

Again, I didn't start pursuing CS in college to get employed. I started learning more about computers, learnt to code websites and then went back to figuring out how a computer works. However, I haven't figured out which area of the stack to develop an expertise in. I will definitely check that book out. Thanks