hi iam certifecate this language i now must what thing to extra infomation and working on c#

Question

thanks to answer me

Answer 1

Hello you, a good start would be writing programs for problems like fibonacci, pow,... Or easily sign up at topcoder for some stuff.

To looking forward for greater problems you can read and think about SOLID code (you can google it C# SOLID) or look at github.
Next you can read about design patterns and anti patterns. If you read about SOLID code and patterns in my opinion you dive into the object oriented world. Because these things often described on clear examples.