need help with CST for university Course labs

I have to use CST software for my university course Electromagnetism. I have no idea how to get started I want to do some calculations like electric field, magnetic field, dielectric constant, apply maxwell equation... if any body can provide me some idea for beginners I would appreciate it.
Thank you

What is wrong with integrated documentation pack?! Don't you have one?

no I dont have one. I found some manuals on google but they dont tell how to calculate EM field, apply maxwell equation and all basic stuffs of EM.

Basically using CST you are not dealing with equations yourself. Equations are solved using implemented numerical methods and are applied to the model geometry/material parameters you specify in the software. The only way to start would be google more tutorials and guide them step-by-step to get initial picture what this thing is about.