I am an engineering student and I wanted to learn neurology in parallel what should I do?

Maybe if you said why you want to know this. The normal/obvious reason is that you want to sense neurological signals for the purpose of engineering control of devices - but that has a lot more to do with sensors and surface effects than with neurology. It is advanced enough that finding books is unlikely, journals are a better source.

Try a library with a section on Biology> Nervous system.