By building a simple Task Manager console app in C#, the author gained a deeper understanding of array methods like Array.Copy() and Array.Clear().
The author highlighted the importance of understanding methods such as finding the first exact match in an array, making deep copies manually, and resetting values to default.
Lessons learned include the necessity of handling resizing, copying, and avoiding overwrites manually while working with a simple string[] array.
The author recommended learning C# through practical projects to fully grasp concepts like array manipulation, object references, and method functionalities.