Added a Console.WriteLine to the end of the program

Created new WPF app to show threading examples and best practices in order to use them more effectively.

Learned about Thread Start, End & Completion by using the TaskCompletionSource which is tells us if a task is done or not.

Added new file LinqToSqlDataClasses.cs

Added new "Threads" solution. This solution will cover the first half of the Threads section in this course.

Added new WPF solution "LinqToSql" in order to continue learning about Linq and how to use LinqToSql.

Learned about sorting and filtering data with Linq.

Added new folder "Linq" where all material related to this course section will be placed.

Created WPF Database App "ZooManager".

Added new solution folder "WPF - Windows Presentation Foundation.7z"

Created new solution "Events and Delegates" to store all the code related to this section.

Created new method PrintArgs that runs a foreach loop that prints everything in the string[] args array.

Created new solution ArgsCMD for the last two videos of the Advanced C# topics section.

Learned about nullable variables and the Null Coallessing operator

Learned about regular expressions and how to use them.