**Python 3** is the better version for beginners. It is the latest version and has several improvements over Python 2, including:

1. **Simpler Syntax**: Python 3 has a more consistent syntax, which makes it easier for beginners to learn.
2. **Better Unicode Support**: It handles text in multiple languages better with improved Unicode support.
3. **Enhanced Libraries**: Most new libraries and frameworks are built for Python 3, making it more future-proof.

Python 2 is outdated and no longer supported, so learning Python 3 will be more beneficial for current and future development.

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In Python, `//` is used for floor division. It divides two numbers and rounds the result down to the nearest whole number.

For example:
```python
7 // 3 # This will give 2
```

Here, `7` divided by `3` is `2.3333`, but `//` rounds it down to `2`.

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Python was developed by **Guid van Rossum** in 1991. He created it as a successor to the ABC programming language, focusing on simplicity, readability, and ease of use. Guid van Rossum continued to guide its development for many years and is often referred to as Python's "Benevolent Dictator For Life" (BDFL).

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Python is considered an object-oriented language because it supports the principles of object-oriented programming (OOP). This means:

1. **Classes and Objects**: Python allows you to define classes, which are blueprints for creating objects (instances). Each object can have attributes (data) and methods (functions).

2. **Encapsulation**: Data and methods are bundled together into classes. This helps in hiding the internal state of objects and only exposing necessary parts.

3. **Inheritance**: Python classes can inherit attributes and methods from other classes, allowing for code reuse and the creation of a class hierarchy.

4. **Polymorphism**: Python allows methods to do different things based on the object’s class, even if they share the same name.

These features help in organizing code and making it more modular and reusable.

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Some of the best books on Python data structures and algorithms include:

1. **"Problem Solving with Algorithms and Data Structures Using Python" by Brad Miller and David Ranum** - Provides a clear introduction to algorithms and data structures with practical Python examples.

2. **"Data Structures and Algorithms with Python" by Kent D. Lee and Steve Hubbard** - Covers fundamental data structures and algorithms with Python, offering clear explanations and code examples.

3. **"Python Data Structures and Algorithms" by Benjamin Baka** - Focuses on Python-specific data structures and algorithms with real-world examples.

4. **"Algorithmic Thinking" by Adnan Aziz** - Although not Python-specific, it provides algorithmic insights and problems that can be solved using Python.

These books provide both theoretical knowledge and practical implementations in Python.

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