Suggest a kaggle challenge(knowledge) or something similar for a beginner

I'm trying to learn machine learning by my self, I have downloaded the stanford machine learning videos to learn the theory and for practicals I'm planning to attempt a kaggle knowledge challenge.

I'm not very strong in programming and would like a challenge which publishes source codes so I can learn by observing them.

Thank you and if you have a better idea to get started in this field please suggest that as well