Embedding a post on some other site is just another way of sharing it, right? So just click on the paper airplane icon at the bottom of a post (where all the other share options are), click “Embed,” and copy the code to your clipboard. Then just take that code on over to the other website, and paste it wherever in the HTML that embeds are supposed to go.
This is what the embedded post should look like:
For more details on how embedded posts work, go here.