DOCSP-37264: Add text comparing async vs sync/LINQ vs builder usecases (#195)

Author: mcmorisi

source/faq.txt

@@ -183,6 +183,18 @@ The error message consists of multiple parts:
      can use tools like ``openssl s_client`` to debug TLS/SSL-related
      certificate problems.
 
+.. _csharp-faq-linq-vs-builder:
+
+Should I Use LINQ or Builder Classes When Querying for Documents?
+-----------------------------------------------------------------
+
+If you're used to programming in {+language+}, consider using LINQ because of its similar feel
+to programming in native {+language+}. If you have prior experience with other MongoDB drivers,
+consider using Builder classes because of their consistency with other drivers.
+
+We encourage experimenting with both approaches to determine the most suitable mechanism
+for your purposes.
+
 .. _csharp-faq-unsupported-expressions:
 
 Why are Certain LINQ or Builder Expressions Unsupported?

source/usage-examples.txt

@@ -42,6 +42,18 @@ operations. Each example provides the following information:
 
 - The expected result after running the example
 
+.. tip::
+
+   Whether you use a synchronous or asynchronous framework in your application depends
+   on your use case. Synchronous calls are more suitable for simple query workflows or
+   when you must implement sequential logic. Consider using asynchronous calls if
+   your application relies on multiple concurrent database requests or if your
+   program doesn't require an immediate response from the database to continue
+   executing.
+   
+   We encourage experimenting with both approaches to determine the most
+   suitable framework for your purposes.
+
 How to Use the Usage Examples
 -----------------------------