Wow that's going to be a rabbit hole. How amazing. The first one I watched was the rocket skateboard. (specifically this one: https://youtu.be/6JsOoQTHRuA )This man is going to die doing what he loves. The rocket sleigh was pretty insane too. Coolest new thing I've seen in a long time. Thanks for saying who it was.
That looks to be a sausage, egg, and cheese Croissan'wich they are advertising for 99 cents, and another concrete example of the massive corporate greed of today:
(Or are we all making 4x today what we were in 2001 for the same jobs? That's a rhetorical question, we are not.)
FWIW apparently the deer was tame and she only kept it while making a movie (and maybe for a bit afterwards while she was recovering from a miscarriage.) In the movie, her character was followed around by a deer so it had to get used to being near her beforehand. source
You should try Linux because you want to and find it interesting to learn. If you are doing it because other people told you to, you are going to have a bad time.
Linux isn't Windows with different branding. Things work differently, and if you take the time to understand why you'll usually see the logic eventually, even if you may not to agree with it. I think folks are bristling a bit at your implication that things are hard on purpose somehow. Many experienced users find the terminal easier to use and more efficient; it shouldn't shock anyone (including you) that it's going to feel awkward when you don't understand it yet.
Howtos tend to use the terminal because it's likely to work the same for everyone regardless of what other choices they've made with desktop environment, etc.
You can do nearly everything with a GUI if you choose.
Both options will install the Mullvad client from the AUR. (If you use an arch derivative, that already tells you some things. If you don't, then you are missing some context.) The first option will install from binary, the second will compile from source. Which you choose is up to you.
If you blindly chose one over the other because you didn't know, worst case you end up being impatient if it takes awhile to compile from source.
Although I think having to fix a borked bootloader is a good bit of experience, it's probably not something you are always going to want to spend time on. I have used boot-repair only once, but it was like magic. Just throwing it out there for your future use and a general recommendation. :)