How to Install a Blogger Template - Upload a Professional Blogger Theme ...

Blogger is nice in many ways but clunky in others.  Setting up this blog, I found that the YouTube videos displayed could not be clicked into full screen mode!  So the search began for a theme that would work to do so; while I didn't find any on Blogger itself, I did find that other Blogger-compatible templates are available, and this YouTube video reveals some sources and tells how to install them.  Sweet!