This is a list of what, at some point to you, will be "obvious" details about the website, but which you may waste time trying to derive when you first arrive.
Find what code runs what page on the site
for most cases, you can look at
Find the main site template
for now, this is
Add a template variable that shows up on every page (i.e. for gandalf tests or what have you)
Add a new topic badge
Assuming you've checked out the badge repo, you now need to update