They have some general walkthrough tutorials http://tensorflow.org/tutorials/mnist/beginners/index.md
and a nice overview on machine learning. you will need to setup an account. It is free and very informative. https://www.coursera.org/learn/machine-learning/home/week/1
hundreds of resources for machine learning can be found here http://www.machinelearningsalon.org/assets/the-machine-learn...