I am web developer and I have been doing a lot of server configurations and system administrative tasks lately I was wondering if someone could recommend books and tutorials that would help understand how things are done the right way. Though I mostly work with Apache and Nginx for configuring and maintaining my applications, my approach has been largely trial and error based with information off google and blogs.

Could someone recommend books that explain how to get started with system administrative tasks (preferably in a tutorial fashion so that I may try and understand the workings of the system). I work mostly on Linux systems on EC2

Thanks in advance.