Added some fun resource

Author: pevnak

docs/src/index.md

@@ -88,6 +88,11 @@ There are no hard requirements to take the course, but if you are not at all fam
 with Julia we recommend you to take [Julia for Optimization and Learning](https://github.com/JuliaTeachingCTU/Julia-for-Optimization-and-Learning) before enrolling in this course. The [Functional Programming](https://cw.fel.cvut.cz/b202/courses/fup/start) course also contains
 some helpful concepts for this course. And knowledge about computer hardware, namely basics of how CPU works, how it interacts with memory through caches, and basics of multi-threadding certainly helps.
 
+## Before joining the course
+Consider reading these two blog post to figure out if Julia is the language in which you want to invest your time.
+- [What is good about Julia](https://viralinstruction.com/posts/goodjulia/)
+- [What is bad about Julia](https://viralinstruction.com/posts/badjulia/)
+
 ## References
 
 - [Official documentation](https://docs.julialang.org/en/v1/)