Merge branch 'master' of https://github.com/open-source-society/computer-science

Need to mearge for update the repository.

Author: mkghosh

extras/courses.md

@@ -128,6 +128,9 @@ Courses | Duration | Effort
 [CompTIA Cloud+](https://www.cybrary.it/course/comptia-cloud-plus/) | 10 modules | 2.5 hours
 
 ### Math (Linear Algebra)
+Courses | Duration | Effort
+:-- | :--: | :--:
+[Linear Algebra - Foundations to Frontiers (LAFF)] (https://www.edx.org/course/linear-algebra-foundations-frontiers-utaustinx-ut-5-03x)| 15 weeks | 8 hours/week
 
 ### Cryptography