coding tutorials

Author: tguyenn

docs/_sections/_guide-supplementals/coding-tutorials.md

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 # Coding Tutorials
 
-TBD
+## 1. Variables and Data Types
+
+Variables are named storage locations in memory for holding data. Each variable has a specific **data type**, such as `int` for integers or `double` for floating-point numbers, which dictates the kind of information it can store and the operations that can be performed on it.
+
+* **Tutorial:** **[geeksforgeeks: C++ Basics](https://www.geeksforgeeks.org/cpp/cpp-programming-basics/)**
+
+## 2. Operators
+
+Operators are symbols that specify a computation when applied to operands. C++ includes **arithmetic** (`+`, `-`, `*`, `/`), **relational** (`==`, `!=`, `<`, `>`), and **logical** (`&&`, `||`, `!`) operators, which are fundamental for performing calculations and forming logical expressions.
+
+* **Tutorial:** **[GeeksforGeeks - C++ Operators](https://www.geeksforgeeks.org/operators-in-cpp/)**
+
+## 3. Control Flow
+
+Control flow statements direct the order in which program instructions are executed. **Conditional statements** like `if`, `else if`, and `else` allow the program to execute different blocks of code based on the evaluation of a specific logical condition.
+
+* **Tutorial:** **[geeksforgeeks - if/else Statements](https://www.geeksforgeeks.org/cpp/c-c-if-else-statement-with-examples/)**
+
+## 4. Loops
+
+Loops facilitate the repeated execution of a block of code. **Iterative constructs** such as `for` and `while` loops are used to perform a task multiple times, either for a predetermined number of iterations or until a specific condition is met.
+
+* **Tutorial:** **[w3schools - While Statements](https://www.w3schools.com/cpp/cpp_while_loop.asp)**
+* **Tutorial:** **[GeeksforGeeks - C++ `for` Loop](https://www.geeksforgeeks.org/cpp/cpp-for-loop/)**
+
+## 5. Functions
+
+A function is a self-contained block of code that performs a specific task. Functions promote **modularity** and **code reuse**, allowing for more organized, maintainable, and scalable software by encapsulating logic that can be called from multiple points in a program.
+
+* **Tutorial:** **[learncpp.com - Introduction to Functions](https://www.learncpp.com/cpp-tutorial/introduction-to-functions/)**