As far as Blink ... it is open source, that means any changes Opera make to Blink itself must be available to anyone. (Open source does not mean public domain.) Apple didn't originate webkit - it was based on the (also open source) khtml engine used in the Konqueror browser on Linux and FreeBSD. So any change Opera, Google, Apple, Konqueror or anyone else make is available to everyone ... if they can figure out how to use it. Truth is, khtml is quite far behind webkit because it is hard for them to incorporate all the updates into their code.
Now, Opera's UI is totally theirs, Google has some proprietary stuff of their own in Chrome, likewise Apple in Safari though Konqueror is completely open source. But not one of those entities sells the browser, so ...
What should I prepare FOR Linux?
This is a nicer way of asking so I think I can organize my ideas and answer the topic too.
Before and while you consider the points below you must analyze and research:
Are you curious and interested in software that may provide you a better experience after you have set it up, and do you have some free time?
The reasons to switch to Linux.
What desktop environment suits you better. The differences in using the computer compared to the other system you're used to exist but they're not necessarily good or bad, it's a matter of personal preference.
What distribution is more in line with your ideals, wishes and needs. For this the development and release models and in which desktop environment(s) they specialize is also important.
It may not be easy to evaluate all of that but happily you can try a LiveUSB/DVD/CD.
What you should know:
Learn what a bootloader does at least to the point where you can configure GRUB to remove the usual XX seconds delay when starting the system.
For dual-boot. Windows won't want to read the Linux file system. Linux will read NTFS but only if Windows has been shutdown properly before you try to access it (ok with Win8.0, with Win8.1 I had to disable hibernation completely). More GRUB...
Drivers. Everything should work out of the box but pray for your graphics card support.
Lack of common media file formats support due to patents, etc.
Software availability: what exists and what's in the official and unofficial repositories + packages downloaded from the web for your distro (e.g. RPM, DEB, other). Lack of proprietary software you're used to, so you'll deal with alternative software and sometimes they're not as feature-complete. And when one closed-source version of that software or an alternative exists (even if freeware) for Linux the majority of distributions will "boycott" it.
Issues? Sometimes you can ask in a forum or create a bug report, but prepare yourself to learn the name of some components and what they do and receive instructions on how to edit some lines in a file in an obscure location (after some terminal-fu of course).
Download and try to install the AV, some viruses will try to block the install - but it can't be worse than it is now. In the event you can't install it, then you'll have to get a rescue CD - or maybe as a USB drive if you have one of those netbooks with no optical drive.
There must be dozens of reputable AV suites available, free programs like AVG, Avira and Avast or commercial versions including all the above (they have both, and will try to convince you to upgrade to the paid version) or Norton and MacAfee and so on. Use something reputable, not just something you see an ad for - some of the ads are malware that pretends to be an AV suite. Just make sure it says it will run with 8.0 and 8.1.
I think there should be a law that requires women and/or couples to have a permit before having a child or children. Financial stability, mental heath issues , social stability, etc. should be checked before the permit is given.
There ought to be a way to have a gravatar selected per site.
There isn't and i don't think that will be one. It would be totally against the purpose of gravatar.com of allowing to use the sama avatar in many sites without have to set up each one of them. "One person, one avatar" would be the motto and not "One site, one avatar".
Right now, the html5 track specification has the attribute "default" that specifies which track should be on by default.
What would be better is my mind is to junk that attribute and instead have a user preference.
Someone who is deaf could set the preference to captions in their language, so that in a video with track information - first it would look for tracks with an kind attribute of captions and a srclang attribute of their native language, and automatically turn that track on. If such a track doesn't exist, then look for kind subtitles with their srclang and turn it on.
Someone who isn't deaf but wants subtitles could set their preferences to look in the opposite order.