Rosalind is a platform for learning bioinformatics through problem solving. Take a tour to get the hang of how Rosalind works.
Starting October 21, we will run the Bioinformatics Algorithms massive open online course on Coursera. You can start reading the first week's materials now on Stepic in the form of a new interactive textbook that includes automated programming challenges and real genetic datasets. The code challenges for this book can also be found as a collection of exercises in the Textbook Track location.
If you don't know anything about programming, you can start at the Python Village. For a collection of exercises to accompany Bioinformatics Algorithms book, go to the Textbook Track. Otherwise you can try to storm the Bioinformatics Stronghold right now.