I am also really glad someone has glued toghether major aspects of template/html std library. It is definetely a place where are some 'taboos', tricks or gotchas, i.e. re-usability of tmpl static variable to add multiple named templates and call them by name (re: question on disqus below article) or sharing parent scope to children variable when using range loop (stackoverflow popular question). I am bit sad I haven't found some free time to collect all known 'tricks' to me and try to list them somehow or send CR yet.
Totally agree, I'm also glad there is another resource for learning templating! The gotchas are frequent for me when it comes to templating in Go. Recently I found that html/template will strip tags when inserting into an attribute [1]. I did not realize that Go made a special template for attributes (template.HTMLAttr) which is what I needed to make it work. [2]
