Go buy it.
I’ve just finished writing a book titled ‘Linux Administration Cookbook’ for Packt Publishing. Available here: https://www.packtpub.com/virtualization-and-cloud/linux-administration-cookbook
The writing process was… somewhat manic, and owing to how quickly I can write, the publication date was brought forward by two months (which only applied more pressure.)
I hope you find it informative (if you choose to buy and read it) or just downright impressive (if you don’t.)