The past few days I have been watching videos and reading up on tutorials that are on the eterna website in order to gain skills for the switch labs. This is the link to the tutorial i have been using, on top of the eterna skills you will learn a lot about RNA and entropy.  It is a good way to learn more about the topic.  https://getsatisfaction.com/eternagame/topics/switch-lab-intro.  On top of all this i have been working on challenges that are a little more difficult and I am still attempting switches. Right now my current rank is 2,249. Here is an example of the switch i am currently stuck on. It is the Pincers (switch) Challenge.