So …

First thing you need to do is to write a new post or go and edit one. Put the cursor at that point where you want to embed it, let’s say somewhere in the middle of the post. Now, switch to the HTML mode of your editor (I made a printscreen of my view now so you can spot it faster).

Ok … next step is to find your youtube video. That’s pretty easy. Open a new browser window, go to youtube.com, find it and then you’ll notice it has an embed “code” somewhere on the right hand side of the page, like in the image below:

Click on that, copy it, come back to your original browser window with the post editing and paste it. Hit update/publish and you have it.