A brief IPython notebook-based tutorial on basic Theano concepts, including a toy multi-layer perceptron example. View online here:
http://nbviewer.ipython.org/github/craffel/theano-tutorial/blob/master/Theano%20Tutorial.ipynb
A more comprehensive tutorial can be found here: http://deeplearning.net/software/theano/tutorial/ Which is being converted to IPython notebook here: https://github.com/jaberg/IPythonTheanoTutorials