According to the FAQ towards the bottom of each webpage, you can take the courses for free if you are not going for a specialization certificate. There is an intro class to Python which starts May 22nd:
https://www.coursera.org/specialization/#specialization/fundamentalscomputing2/37/overview
AND a data scientist track which includes R programming (April 6) and statistical inference (April 6):
https://www.coursera.org/specialization/#jhudatascience/1
Please let me know if you try any of these courses and if you would recommend them to other students!