Hi Dean,
That Youtube video is a little bit outdated. The structure of the default Vanilla theme has changed quite a bit since then. There are now separate navigation template and less files. Here's what I did to add the logo to my theme:
1. Add my-logo.png (or whatever you want to call the logo file) to the assets folder in your theme.
2. Add: <span class="page-logo"></span> at the first line of the div in navigation.hbs.
3. Add CSS for the page logo to navigation.less Note: the @media-all part hides the logo on small screens. You can remove that part if you don't want it, but things get pretty squishy on a mobile device when you have a logo in there. This code puts the logo about 1/3 of the way into the page (25% margin plus the width of the back/home button) You may also want to try centering it or having it right beside the back button, I just didn't like the way our logo looked in either of those configurations. Either way, you'll probably need to play around with the CSS to get it just the way you want it.
.page-logo {
background-image:url(assets/my-logo.png);
display:inline-block;
margin-left:25%;
@media all and (max-width:700px) {
background-image: url(assets/my-logo.jpg);
height:0px;
width:0px;
margin-left:0px;
}
}
Note: This is assuming you have already created your own copy of the Vanilla theme: https://github.com/adaptlearning/adapt_authoring/wiki/Modifying-the-Vanilla-Theme#updating-your-theme and know how to trigger a full rebuild in your course after you upload to Adapt.
Hope that helps.
Ryan