Hi,
I'm a Newbaby In Linux although have gone through some udemy course.

Buh I a mentor in this Linux field to guide me blend me and expose me.

Thanks to Linuxquestions.org for this platform

Welcome to the forum

you can try udemy.com. They have both free and paid courses on linux on any subkect.

Also search youtube.com for linux tutorials. Start with installing linux, administrating linux (installing packeges, update/upgrade system) and then linux commands.

Another very good learning tool is the "linux in a nutshell" book by o'reilly. I expect you can find one in a used book store and I am sure you can buy one new on line.

Welcome to the forum!

You can find "linux in a nutshell" used on eBay.

Another good resource would be the "Linux Bible". Cheap in used bookstores, if you can find it. It does not go deep into anything, but hits almost EVERYTHING in Linux. Drawback, it weighs a LOT!

Going Linux is an excellent resource, both the podcast and the website.

Anything from O'Reilly is good. I swear by one they also published called Running Linux. That book and a Knoppix live disc helped me boot a previously unbootable computer at a time when I knew almost nothing about Linux.

Here's a good library https://www.linuxtopia.org/

When you get ready to actually try Linux, I suggest that you use a "virtual machine" on your existing system – which will not "change" at all.

My "go-to favorite" is VirtualBox®, which is full-featured, easy to use, "runs on everything," is supported by the largest software corporation on the planet, and is absolutely free. It's certainly not the only "virtual machine monitor" that is available, but IMHO it is a very good one and likely to be your best choice in this use-case.

Now, you can experiment with an actual Linux installation to your heart's content, without disrupting anything on the "host" computer or putting anything at risk. While the "guest" operating system can discover that it is running in a virtual environment, it cannot directly see nor affect the "host." The VM's "hard drives" are actually ordinary files on the host system which grow and shrink as required. Linux is now running in a window (which you can of course make "full screen"), and it will actually run almost as fast (on modern CPU's) than it would on "bare iron." Now, the task of "getting to know Linux" is safe and painless.

FYI: Today, all of the "production" Linux environments that I use daily as a consultant are "virtual." I have dozens of them now, all different, which I "spin up" or "spin down" as required.

Given this flexibility, I'd suggest that you download any distro's "installation CD image" and basically jump in! The water's fine and you cannot drown. You are not putting anything "at risk." You can even "snapshot" your VM image and restore it. Fully expect to "suddenly feel lost," and bring your many questions here. Be patient with yourself: you are learning.