But installing Linux doesn’t instantly unlock a fountain of knowledge in your head. It’s the starting point of long journey...
+1 to both!
A very long journey! If one is considering Linux seriously, then the same must be committed to learning a new way of using a computer, at least long enough to gain needed knowledge for the long haul. If one is going to dual boot, then we're going to do that anyway from knowledge in articles/forum postings. The site is in the business of teaching Linux, and being free also means that some items will be missing or only briefly discussed.
The one thing that they don't do.......is promise that 'with our course, you'll be making megabucks in weeks'. Those are the sites that turns me off & fast, other than either engaging in illegal activity or hitting the lottery, there's no such thing as what's promised. If this were true, then few would spend what takes a lifetime to repay in higher education.
I'd bet most anything that DC would also agree that a 8 to 16 week course for $150 to $300 to make a six figure salary is a scam, and it becomes more obvious when one clicks to close the tab, they'll offer 20% off to keep reading or watch the video.
Glad that this site does keep it simple & to the point, as humans, we were given a mind to use, no one can teach experience. Only we can do that by learning from mistakes, if necessary, keep a journal so as not to repeat the same, get up & start over. Or if smarter than 85% of Home users, will keep recent backups to where any losses are minimal. Keep /home separate, preferably on a separate drive. Which can be done on notebooks also that has an optical drive, by removing the seldom used one (a $5 USB adapter from eBay makes it just as usable again, and for $10 more, a case), then purchasing a optical bay to HDD/SSD adapter to install a drive in. Note that there are different sizes, the more common that over 12mm thick, another around 9.5mm, and now another that's thinner (closer to 9mm for ultrabooks produced before optical drives were no longer used). If in doubt, consult the owner's manual, the sales assistant on eBay/Amazon (I prefer eBay for the usual free shipping & lower pricing).
Or post the model on the Forum with complete specs as possible, don't forget to include Model number, though don't provide serial number. We don't need that to assist, a thief who knows what they're doing can find a way to get support (or recovery media) using your S/N, or worse yet, a rebate (or class action settlement) that may belong to you.
At any rate, back to what I was saying, keeping the OS & one's precious Data is critical, I cannot describe in words how much so & neither can any site. Plus when using browsers such as Mozilla Firefox or Google Chrome, take the time to create an account, this gives one the opportunity to never lose bookmarks, extensions & some preferences, and in the case of Google, a free email account with 15GB of storage. Which can be used on Linux for free when the Insync client is offered at no cost for a few days. Once activated it on the first computer, and then the installer can be used on other ones after the activation period is over at no charge.
As to this site, as Linux grows, I see more of the same type popping up out of nowhere over the next few years. Especially when Windows 10 ceases to stop working on otherwise healthy computers (think last of the Core 2 Duo/Quad & 1st gen 'i' series CPU's). It's going to happen, and on some, are already very sluggish, even on decently equipped hardware. Maybe it's the update rather than clean install, and maybe it's also a way to force consumers into thinking that we 'need' a new computer. If Windows 7 was running fine before the initial upgrade, that's a farce, Linux of your choice will run very fast on it, even if it's only SATA-2 capable, will still fire up in little time (a Samsung 850 250GiB SSD is a great investment for often under $80 these days), and when it does start, there's no silly neon circle waiting for things to load, it's ready to roll!
The rest of Linux that's not covered, we learn in time, the experience factor I spoke of above. No manuals or self-help sites can teach everything, nor has an answer for every issue. That part is up to us.