1. Introduction

1.1 Brief explanation of the tutorial's goal

This tutorial aims to guide you on how to implement local data storage in hybrid apps. By the end of the tutorial, you will have a good understanding of how to store and retrieve data from the user's browser using HTML5 techniques.

1.2 What the user will learn

In this tutorial, you will learn:
- The concept of local data storage
- How to implement local data storage in hybrid apps using HTML5
- Techniques to store and retrieve data from the user's browser

1.3 Prerequisites

Basic understanding of HTML5, JavaScript and hybrid app development is necessary. Familiarity with web storage API will be beneficial.

2. Step-by-Step Guide

2.1 Explanation of concepts

Web Storage API allows web applications to store data persistently in a user's browser. There are two mechanisms within this API - localStorage and sessionStorage. localStorage remains even when the browser is closed and reopened, while sessionStorage gets cleared when the browsing session ends.

2.2 Clear examples with comments

Here's an example of how to set, get and remove items with localStorage:

// Storing data
localStorage.setItem('myKey', 'myValue');

// Retrieving data
let data = localStorage.getItem('myKey');

// Removing data
localStorage.removeItem('myKey');

2.3 Best practices and tips

• Always make sure to check the availability of the Web Storage API before using it.
• Be aware that Web Storage is domain-specific. It cannot access or share data across different domains.

3. Code Examples

3.1 Example 1: Storing Data

// Check if Storage is available
if (typeof(Storage) !== "undefined") {
  // Store value
  localStorage.setItem("username", "John Doe");
} else {
  console.log("Sorry, your browser does not support Web Storage...");
}

In this code snippet, we first check if the Web Storage API is available in the user's browser. If it is, we store a value with the key 'username'.

3.2 Example 2: Retrieving Data

// Retrieve value
let user = localStorage.getItem("username");
console.log(user);  // Outputs: John Doe

In this snippet, we retrieve the data we stored in the previous example. The getItem method returns the value associated with the key.

3.3 Example 3: Removing Data

// Remove value
localStorage.removeItem("username");

This code removes the data associated with the key 'username'. If you attempt to retrieve this item after it's been removed, it will return null.

4. Summary

In this tutorial, we've covered the basics of implementing local data storage in hybrid apps. We've learned how to store, retrieve, and remove data from local storage and have practiced with some code examples.

To further your learning, you could explore how to handle complex data types like objects and arrays, and how to use sessionStorage.

5. Practice Exercises

5.1 Exercise 1: Storing and Retrieving Data

Store your name and age in localStorage and then retrieve them.

5.2 Exercise 2: Updating and Removing Data

Update your age in localStorage and then remove your name.

5.3 Exercise 3: Handling Complex Data

Store an array of your hobbies in localStorage. Retrieve them, add a new hobby and store the array back in localStorage.

Remember, practice is key in mastering any new concept. Happy coding!