While the buzz around bigdata might die down a bit in 2013, the main ideas of data science are not going away. Being able to make smart decisions based upon data is a concept that is here to stay.
In fact, 2013 might be the best year ever to start learning data science skills. Colleges and Universities are opening new data science/analytics programs. There are numerous MOOCs avaiable or you can follow along on with a Coursera curriculum. Plus, there are thousands of blog posts, wikis, and other articles all covering various data science topics. If you want to learn data science, the timing could not be much better.
Happy New Year and Happy Learning!