Which rigging tutorial?

Hello guys i want to learn rigging in Maya. I am a modeler about 2 years but i dont have any knowledge about rigging. I searched online lots of people are talking about 3 tutorials;

1-Animator Friendly Rigging
2-Art of Rigging
3-Fahrenheit

I have looked some example videos from that tutorials and they seem very old. Do you really suggest these tutorials right now? If yes which one should i start? If no; which tutorial series do you recommend?

Thank you very much.