Here are some informative online resources that can help in teaching online programming courses C++, Java and Python

Tutorials & API

• C plusplus
• JAVA API
• Python

Integrated Development Environment

• Eclipse for Java
• Microsoft Visual Studio for C++
• Code::Blocks for C++ 
• Python Releases for Windows
• Python Releases for Mac OS

Podcasts:

• Learn C++
• How to program with Java
• The Java Spotlight Podcast
• Python Tutorial

C++ Examples (You Tube Videos):

• cout Statement
• Declaring and Assigning Variables 
• Using cin 
• Simple if-else  statement
• While Loops
• Do- While Loops
• for loops
• Functions
• 1 D Arrays
• 2 D Arrays

RSS Feeds:

• O’Reilly RSS Feeds
• Tech Crunch RSS Feeds
• WebAppers RSS Feeds

• Introduction to C++ |edX
• MIT OCW Introduction to Java
• MIT OCW Introduction to C++
• Udacity Introduction to Python Programming