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| -rw-r--r-- | documentation.mdwn | 4 | 
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diff --git a/documentation.mdwn b/documentation.mdwn index 263be828..bfdaa839 100644 --- a/documentation.mdwn +++ b/documentation.mdwn @@ -25,8 +25,8 @@ architecture.  Yes, really.  ## Operating Systems Basics -Books.  Etc. - +You can find good free, self-paced online courses about operating systems on <https://www.udacity.com/> . +A free textbook about operating systems is called [Operating Systems: Three Easy Pieces](http://pages.cs.wisc.edu/~remzi/OSTEP/).  ## GNU/Hurd System Architecture  | 
