How to install Sierra on a clean disk?

I have just downloaded the High Sierra OS from. https://support.apple.com/kb/DL1946?locale=en_US. It comes in as a .dmg file 2 GB. Makes no mention of further processing needed. I burned it to a DVD as a disk image, but it arrived as a .pkg which I already know it won't work. I opened the .pkg file and within found 9 more .pkg files.. While the Apple reference makes no mention of what iss needed, it seems obvious it is aimed at a working computer that will execute .pkg files. Which brings me back to my question, Is there a version of High Sierra (or Sierra) that I can download from somewhere that is intended to be installed on an empty hard drive from either CMD R or OPT?

Thank you for your suggestion. I did check that reference. Sierra is not accessible from within it, but High Sierra is listed as available. Unfortunately, when I click on High Sierra, an error message pops up, "cannot be found". These instructions also indicate that an Applications folder must be available. However, I'm trying to install an OS onto an empty freshly formatted hard drive. There is no Applications folder. I believe I'm in need of some form of OS (Sierra or High Sierra). That CMD P recognizes, executes and does the install from within an external device such as a USB stick, or a DVD. Is this available somewhere?

I never did receive the desired website to download the Full Install of High Sierra. This afternoon I went to our local Apple Store where they advised me to bring in her iMac 27 and they will install the most current working OS at no charge.. The trick will be to get this really heavy computer down two flights of stairs, then into my car, then arriving at the shopping center, lugging it from the parking lot into the Apple Store, a long walk. The folks at the Apple Store absolutely refused to put the needed file onto my USB stick, forcing this mighty inconvenient approach. They will not come out to my car to carry it in.

I did ask this specific question, with my USB stick in my hand. They declined, telling me "We can't do that!" My appeal that at my advanced age (90), having to lug this mighty heavy computer across town to the shopping center, then physically carry it from the huge parking lot into the middle of the mall was/is a real inconvenience fell on deaf ears. I am not impressed with Apple's concern for customer support.

I agree, but already attempted. Local Apple Store "Cannot do that!". So I appealed by offering to buy their USB stick containing the needed OS. To that they repeated, "We cannot do that!" But they countered by inviting me to bring in my wife's iMac 27 and they would install the needed OS FREE! I repeated my appeal that at my advanced age (90), bringing bringing the very heavy iMac 27 scross town to the Store is might inconvenient. They did not budge, still want me to bring it in. Stay tuned.......

The Apple rep I was talking to gave me 2 references for approved Apple service, one of London Drugs at our giant St. Vital Mall. Unfortunately, London Drugs terminated that service 5 years ago when the guy providing it retired. Guess they did not notify the Apple folks. What was not mentioned was a local Apple Store "Simply Computing" that likely could provide the service. Small corner neighbourhood store across town. Curious not mentioned. Anyways, I bit the bullet and physically carried her iMac 27 across town to the Apple Store in the almost equally large Polo Parl Mall, where it is now receiving a replacement OS, theoretically free. Stay tuned.....

Yesterday I bit the bullet and hauled my wife's really heavy iMac 27 across town to the Apple Store in the Polo Park Mall, had to leave it overnight. Got an email that it was ready for pickup, which I did and got it back home safely. Set it up, plugged it in and the system icon appeared to be happy, progress bar started normally. Got to about 90% and stalled. 3 hours later, it is still stopped at 90%. It would appear that their "test" routine stopped short at seeing the progress bar starting normally., they failed to wait until it actually completed its boot routine. Dammmmm. I am clearly not a happy camper. Stay tuned.......

In my disappointment, I shut it down and had a nap. Later, I did something I should have done hours earlier. I simply restarted. To my surprise and delight it started normally. It is clear that I was too quick to condemn the local Apple folks. For that I apologize.

Forgot to mention that recovery from my Time Machine backup fails.