C# (#9874)

* Update free-courses-en.md

Added ASP.NET Core 2.2 & 3 REST API Tutorial link in C#

* Fix issue 

Alphabetically arrange the resource.

* Added a new screencast in C#

* Update free-programming-books-subjects.md

Add a book on containers written by experts from Microsoft

books/free-programming-books-subjects.md

@@ -241,6 +241,7 @@ Books that cover a specific programming language can be found in the [BY PROGRAM
 * [Docker Jumpstart](https://odewahn.github.io/docker-jumpstart/) - Andrew Odewahn
 * [Docker Tutorial](https://people.irisa.fr/Anthony.Baire/docker-tutorial.pdf) - Anthony Baire (PDF)
 * [Docker Tutorial](https://www.tutorialspoint.com/docker/) - Tutorials Point (HTML, PDF)
+* [Dotnet Microservices Architecture for Containerized NET Applications](https://aka.ms/microservicesebook) - Cesar de la Torre, Bill Wagner, Mike Rousos (PDF)
 * [Kubernetes Deployment & Security Patterns](https://resources.linuxfoundation.org/LF+Projects/CNCF/TheNewStack_Book2_KubernetesDeploymentAndSecurityPatterns.pdf) - Alex Williams (PDF)
 * [Kubernetes for Full-Stack Developers](https://www.digitalocean.com/community/books/digitalocean-ebook-kubernetes-for-full-stack-developers) - Jamon Camisso, Hanif Jetha, Katherine Juell (PDF, EPUB)
 * [Uncomplicating Kubernetes](https://livro.descomplicandokubernetes.com.br/en/) - Jeferson Fernando

casts/free-podcasts-screencasts-en.md

@@ -46,6 +46,7 @@
 ### <a id="csharp"></a>C\#
 
 * [Beginning C# with Unity](https://www.youtube.com/playlist?list=PLFgjYYTq6xyhtVK6VzLiFe3pmBu-XSNlX) - Brian Douglas Moakley, VegetarianZombie (screencast)
+* [General .NET videos](https://www.youtube.com/playlist?list=PLUOequmGnXxPjam--7GAls6Tb1fSmL9mL) - Nick Chapsas(screencast)
 * [How to program in C# - Beginner Course \| Brackeys](https://www.youtube.com/playlist?list=PLPV2KyIb3jR6ZkG8gZwJYSjnXxmfPAl51) - Asbjørn Thirslund (screencast)