Here is what I did...
of all, get an "extra"
computer that you can dedicate to the task of "learning Linux." Grab that old "boat anchor" back out of the closet, as long as it's no more than a couple years old. (It ought to be a Pentium or better, for example, and it should have 128MB of RAM or so, and a CD or DVD-ROM drive.) Make sure that the hard-drive has nothing of importance on it. Now, you have a machine that you can completely torpedo, as many times as you like,
and it's "no harm, no foul."
(2) "Pick a distro, any distro." Get one that's well-supported by a major vendor and where you can get a DVD-ROM or CD-ROM of the whole thing. As noted, "Live CDs" are very handy.
(3) Load Linux on this "throw-away" computer and ...
... get ready to have your mind blown.
No, I mean it!
If you have used Windows all your life, and have not plunged headfirst into completely unknown waters with no more than a "Cowabunga!!!"
then you are going to feel like you are swimming in ice-cold rapids. If you don't know to expect that, or if you can't persuade yourself over and over again that "this is how you learn... this is what I wanted to do, and did voluntarily" ... you're going to feel very out-of-sorts.
Please understand that I am not trying to dissuade you; I am simply trying to prepare you. After you get over the culture-shock, you will start to really enjoy yourself.
As for "whether or not to do it?" Definitely, yes.
Now more than ever, the future is not
going to be a "Windows-only world," and as I say that I actually mean no disrespect whatever to Windows nor to the excellent engineers who build it. I'm just saying that the explosion of hardware
is going to cause a focus on software
that can keep up with the hardware-folks ... and that means exactly two contenders: Apple's [Unix-based] OS/X; and Linux.
You are not
going to remain competitive in your chosen profession if you neglect to properly expand your awareness to include all three
systems. (The more, the merrier, actually... that's the way this business works; the way it has always worked for more than 50 years now.)