I guess the scripting/expressions are mostly same.
But like making new data connection/doing binary load is different.
In front end you'll have quite a few limitations as Qlik Sense is still in developing stages. But you can achieve almost anything by Mashups (embedding other objects into qlik sense).
I'd suggest mainly study about front end/ UI part. The back end is similar to Qlik view.
Videos (especially from Michael Tarallo) should be a good start. And there are tons of training references on the forum.
But can I suggest to do some real QS project(s) before you will going to the interview... ? There are several significant differences (and limitations) between QS and QV, so it will be useful for you to discover them by yourself first, IMHO.