Moved OO back. The others were a bad choice.

README.md

@@ -860,9 +860,8 @@ You'll get more graph practice in Skiena's book (see Books section below) and th
     - [ ] Consistent Hashing: http://www.tom-e-white.com/2007/11/consistent-hashing.html
     - [ ] NoSQL Patterns: http://horicky.blogspot.com/2009/11/nosql-patterns.html
     - [ ] 8 Things You Need to Know Before a System Design Interview: http://blog.gainlo.co/index.php/2015/10/22/8-things-you-need-to-know-before-system-design-interviews/
-    - [x] Optional: UML 2.0 Series: https://www.youtube.com/watch?v=OkC7HKtiZC0&list=PLGLfVvz_LVvQ5G-LdJ8RLqe-ndo7QITYc
-    - [ ] OO Design Videos - can skip through some if you already have a good OO background: 
-        - https://www.youtube.com/playlist?list=PLGLfVvz_LVvS5P7khyR4xDp7T9lCk9PgE
+    - [ ] Optional: UML 2.0 Series: https://www.youtube.com/watch?v=OkC7HKtiZC0&list=PLGLfVvz_LVvQ5G-LdJ8RLqe-ndo7QITYc
+    - [ ] OOSE: Software Dev Using UML and Java (21 videos): https://www.youtube.com/playlist?list=PLJ9pm_Rc9HesnkwKlal_buSIHA-jTZMpO
     - [ ] SOLID OOP Principles:
         - [x] Bob Martin SOLID Principles of Object Oriented and Agile Design: https://www.youtube.com/watch?v=TMuno5RZNeE
         - [ ] SOLID Design Patterns in C#: https://www.youtube.com/playlist?list=PL8m4NUhTQU48oiGCSgCP1FiJEcg_xJzyQ
@@ -1410,9 +1409,6 @@ Sit back and enjoy. "netflix and skill" :P
     - Skiena lectures from Algorithm Design Manual
     - https://www.youtube.com/watch?v=ZFjhkohHdAA&list=PLOtl7M3yp-DV69F32zdK7YJcNXpTunF2b&index=1
 
-- [ ] OOSE: Software Dev Using UML and Java (21 videos): 
-    - https://www.youtube.com/playlist?list=PLJ9pm_Rc9HesnkwKlal_buSIHA-jTZMpO
-
 - [ ] UC Berkeley 61B (Spring 2014): Data Structures (25 videos):
     - https://www.youtube.com/watch?v=mFPmKGIrQs4&list=PL-XXv-cvA_iAlnI-BQr9hjqADPBtujFJd