What are some recommended resources or tutorials for beginners looking to improve their PHP skills and avoid common pitfalls like those discussed in the thread?

Issue: Beginners often struggle with common pitfalls in PHP such as improper variable usage, lack of error handling, and insecure code practices. To improve PHP skills and avoid these pitfalls, beginners should utilize resources like online tutorials, PHP documentation, and coding forums to learn best practices and techniques. Code snippet:

// Example of proper variable usage and error handling in PHP
$number = 10;

// Check if variable is set before using it
if(isset($number)){
    // Perform operations with the variable
    echo "The number is: " . $number;
} else {
    // Handle error if variable is not set
    echo "Error: Variable is not set";
}