Also, are you looking forward to learning how to easily query and update data?
Linux is quite synonymous with the cloud. If you intend to work on cloud-based projects, it is always good to learn Linux, especially the essentials.
While SQL is one of the most famous database query languages that have taken over almost three-fourths of the internet.
Learning SQL is a must for any developer nowadays and with the help of a good eBook, one can understand the basics very well.
A complete guide to start learning Linux and SQL is:
"Programming for beginners Volume 2 2 Books in 1: Linux for Beginners and SQL for Beginners" by Matthew Python.
Here's what you'll learn:
What is Linux?
What is SQL
Getting started with Linux
What is a Relational Database
Database Security model
Recovery models
Choosing an SSH Client; Connecting via SSH with a password from various OS; Importing and generating SSH Keys on various OS; Connecting via Telnet; Connecting
Backup techniques
Download; install; configure; how to add Graphical user interface; how to add additional software; Troubleshooting; etc.
How to select data
Internet with Linux Directly
How to update and delete data
A brief explanation about control flow tools
...and much more