Object-oriented programming Courses
Treehouse Extending Object-Oriented PHP Course (How To)
Treehouse Object-Oriented Python Course (How To)
Treehouse Java Objects Course (How To)
Treehouse Intermediate C# Course (How To)
Treehouse Object-Oriented PHP Basics Course (How To)
Treehouse C# Objects Course (How To)
Treehouse Build an Address Book in Ruby Course (How To)
Treehouse Ruby Objects and Classes Course (How To)
Treehouse Object Oriented JavaScript
Net Ninja via YouTube