how to start metamaterial antenna design in CST

hi am a beginner i need step by step tutorials on how to start metamaterial antenna design in CST please help me

CST has very elaborated help available with the software as well as online.
Just start with any antenna example available in CST there you will find step by step procedure to start

please suggest me some best pdf to read about metamaterial antenna for 2.4ghz applications

https://www.youtube.com/watch?v=DxXR_hyDR1Q
Have a look at this or you can search specifically of your interests