How to get 360 games from the game store using the Xbox one

I too am baffled by this. Clicked on marketplace, "bought" it for free from the page, says it'll download to my 360 (which I don't have). Nothing it showing "ready to install" on the Xbox One.

Ok, I did find it. I tried to follow what everyone said, but thank you Jayadub for explaining it in steps after I bought it, and the ones that explained to just download it. Between the two, it is working now I think. It is downloading now. But have no
doubt, I appreciate everyone that replied to my post. I spent hours on this and man I was really mad and I'm sorry for venting. Microsoft has always made every update or new thing hard to follow. It's like you have to learn computers all over again every
year. I am tired of relearning everything year after year. If you are young, you will figure that out, if you are older, you already know that...lol... Ok, well it was a hard process, but now I know what I have to do to get a backwards compatible game (what
a huge learning curve). I couldn't have done it though without your help. It is done downloading now and working. Thank you all very much! I wish it didn't have to be so difficult, but I'm a happier now..

There all available if you don't have a 360 on the top of the page type in the name of the game you want (in the search bar) then click search. on the next page under filter click on games and then select your game you can purchase it from there if you do
purchase the game it will download to you home xbox.

Currently only available on xbox.com

I have concluded that the Xbox one is about the biggest [Mod Removed] ever made. So is the Xbox website. I've been using computers since before windows was invented (that's for real), and I still program and write web pages to this day,
and their Xbox website is one of the biggest piles of crap I've ever used, but we all know that's typical of Microsoft. Extremely hard to navigate.

I went to the game store with my Xbox and the option to download backwards compatible games isn't there, even though the games are listed. But on my computer it was so I paid for Sonic, clicked "Download to Xbox 360" like was suggested... all I got was a
debit from my bank... no game... and when reading the purchase details, it says there are no refunds for digital downloads... What a joke. Is Microsoft really so stupid they would download to a 360 when they know my device is an Xbox one... oh yeah, they
are. I will be giving very bad reviews for this system every chance I get...

Thanks to all that tried to help... I have no grudge against any of you.. but Microsoft.. that's another story.
[Mod Removed] Thanks all

Ok, I'm pretty sure I tried that already and it didn't work but I will try it again tonight. Thanks!