Program and learn Quantum computing...

IBM has a new website to learn a use Quantum algorithms in real quantum computer...

• Qbit
• Bloch sphere
• Excited states and Pauli operators... 
• Q-gate operators
• Superposition
• Decoherence
• GHZ states (Cat states)

... a lot of more... 

Sources

IBM Inches Ahead of Google in Race for Quantum Computing Power

IBM Research Quantum Experience