Where can I read up-to-date material on creating an application for Facebook in Russian (IFrame)?

Question

Facebook

Tell me the relevant material on creating an IFrame application for Facebook in Russian. By type as for VK.
Most of the materials on the Internet are outdated - 2011 and almost everything has changed there and is not relevant.
It turned out to make a Canvas Page with IFram from my site, but how to make all this into a full-fledged application ...
And I don’t understand where the applications for FB are? All links redirect to /games.