books

sir thank you very much i try to download c# corner's books but when i downloaded the pdf book is not possible to open so please what is the best way to take that books for this website and also if i try to download again when first time is not correct it is not possible to download again please and please help me to learn c# i am very interest to learn c# and give me advice

They are some free books in C# Corner's Books section, PDF downloads. Andrew Troleson's book from Apress is good.