Eckert's COMPTIA LINUX+ GUIDE TO LINUX CERTIFICATION, 5th Edition, empowers you with the knowledge and skills you need to succeed on CompTIA's Linux+ (Powered by LPI) Certification exam--as well as in your network administration career. The book covers the latest Linux distributions, virtualization, containerization and storage technologies. Comprehensive coverage also addresses key job-related networking and security services, including FTP, NFS, Samba, Apache, DNS, DHCP, NTP, Squid, Postfix, SSH, VNC, Spice, RDP, GPG, PostgreSQL and iptables/firewalld. Hands-on projects give you practice using both modern Linux distributions (Fedora(TM) 28 and Ubuntu Server 18.04) and industry's legacy Linux distributions. And with MindTap's live virtual machine labs, you can explore various solutions in a safe, sandbox environment using real Cisco hardware and virtualized Linux operating systems.
I've used a ton of resources, including other books, to learn how to navigate through Linux distros but this one by far is the best. I also had a few misconceptions cleared up, and some gaps filled in. If you are a beginner and work through this book cover to cover on an ubuntu machine, you'll gain the confidence you need to approach the Linux+ cert. I actually just borrowed this from a student, I don't want to give it back :(
Not the easiest book to read. And one warning, based on my classroom experience, most of the questions on quizzes are not directly from the book and required googling to identify what they are talking about.