A pull request on your pull request - don't know if you left that typo in there just to test me! Otherwise very happy with the rest of the edits.
Get straight to the goals of the site.
Minimize passive language in the "How This Site Works" section.
De-Anglicize "Organi(s/z)ation" and simplify section.
Minor tweak to "YAML Conventions > level"
Tweaks to "How Can I Help?" section, clarifying what you can/can't do
Minor tweaks to final two README sections.
Clarify history of jQuery Fundamentals and fix broken link to Murphey's
Fix typo in readme and continue to tweak local dev setup header