I use on the daily basis PyCharm and RubyMine, so CLion felt so... familiar for me. I didn't have to learn how to use the interface and all features because I knew them well. I am a CS student, I have to use many different languages - it was really exhausting when after three hours of working in PyCharm I had to switch, for example, to Eclipse to write a program in C. I am not saying that Eclipse is a bad IDE, but transition between PyCharm and Eclipse wasn't smooth.
What do I love in the CLion? Well, refactoring tools, code generation, code analysis and rich code formatting options are my favourite features. And it's cross platform! It works really well on my Fedora machine.
But the main advantage, for me, is that JetBrains offers free licenses to students. Great initiative!
The plugin repository is not so extensive as in some other IDEs. I had some problems with importing old projects to CLion, but there is a high chance that it was my fault :)
If you use any other JetBrains IDE you'll love CLion. I am not sure how beginner friendly this IDE is, but I am sure that it's worth of try.
I increased my productivity. Thanks to CLion now I have unified set of IDEs - PyCharm, RubyMine and CLion. Time needed to switch from writing a site in RoR to writing a neural network in C is limited as much as it's possible.