1. Introduction

In this tutorial, we will explore how to work with loops in Kotlin. Loops provide a way to execute a block of code multiple times, which is a common requirement in most programming tasks. By the end of this tutorial, you will have a clear understanding of the different types of loops in Kotlin, namely 'for', 'while', and 'do-while' loops, and how to utilize them effectively in your code.

Prerequisites:
You should have a basic understanding of Kotlin syntax and programming concepts. It's also beneficial to have a Kotlin compiler installed on your system or you can use an online compiler.

2. Step-by-Step Guide

For Loop

In Kotlin, the 'for' loop is used to iterate through anything that provides an iterator. Here is the basic syntax:

for (item in collection) {
    // code block
}

The item variable is automatically declared and assigned to the current item in each iteration.

Best practice: Use 'for' loop when you know how many times you need to iterate or when you're working with collections or ranges.

While Loop

The 'while' loop in Kotlin is similar to 'while' in other languages. It continues to execute the block of code as long as the condition is true.

while (condition) {
    // code block
}

Best practice: Use 'while' loop when you don't know the exact number of iterations in advance and you have a condition that ends the loop.

Do-While Loop

The 'do-while' loop is similar to the 'while' loop, but the key difference is that the block of code gets executed at least once before the condition is checked.

do {
    // code block
} while (condition)

Best practice: Use 'do-while' loop when the loop must execute at least once.

3. Code Examples

Example 1: For Loop

// Define a range
val range = 1..5

// Use a for loop to iterate over the range
for (number in range) {
    println(number)  // Prints the current number in the iteration
}

Expected output:

1
2
3
4
5

Example 2: While Loop

// Initialize a variable
var x = 5

// Use a while loop to decrement x until it's 0
while (x > 0) {
    println(x)
    x--   // Decrement x by 1 in each iteration
}

Expected output:

5
4
3
2
1

Example 3: Do-While Loop

// Initialize a variable
var y = 5

// Use a do-while loop to decrement y until it's 0
do {
    println(y)
    y--
} while (y > 0)

Expected output:

5
4
3
2
1

4. Summary

In this tutorial, we discussed the 'for', 'while' and 'do-while' loops in Kotlin. We covered their syntax, best practices, and provided examples of each. The next steps in your learning journey could be exploring more advanced topics in Kotlin, like functions, classes, and coroutines.

Additional resources:
- Kotlin Official Documentation
- Kotlin for Java Developers (Coursera)

5. Practice Exercises

1. Exercise 1: Write a Kotlin program to print the first 10 numbers in the Fibonacci series using a 'for' loop.
2. Exercise 2: Write a Kotlin program that keeps asking the user for their name using a 'do-while' loop, until the user types "exit".
3. Exercise 3: Write a Kotlin program using a 'while' loop to find the smallest integer 'n' such that 2^n > 1000.

Remember, practice is key in mastering any programming language. Happy coding!