fix broken links

Author: afeld

README.md

@@ -66,8 +66,7 @@ I get a fair number of questions via [Hacker Hours](http://hackerhours.org) and
 
 * [@darcyclarke](https://github.com/darcyclarke)'s [Frontend Interview Questions](https://github.com/h5bp/Front-end-Developer-Interview-Questions) (inspiration for this repo)
 * My [Advanced JavaScript](https://github.com/advanced-js/syllabus) class materials
-* [Open Letter: Rails Interview Prep](http://afeld.me/nerdery/561078) from my blog
-* [Video](http://afeld.me/nerdery/522101) of the Junior Developer Panel that I hosted
+* [Video](https://www.youtube.com/watch?v=xPY1uqq1cgk) of the Junior Developer Panel that I hosted
 * [Ruby Koans](http://rubykoans.com/)
 * [Project Euler](https://projecteuler.net/)
 * [Flatiron School Prework](http://prework.flatironschool.com/) and [background](http://blog.flatironschool.com/flatiron-school-prework/)