Which course is best as i am a civil engineer in site or in an office?

AutoCAD 2D -3D and Ms excel is must for every Civil Engineer.

After that if want to become civil design engnieer, structure engineer want to go into civil designing feild go for Stadd pro, Etabs , SAP2000 etc

If you want to become planning engineer For that project management and planning, scheduling feild MS project , Primvera is must.