The currents aren't something to spooked about, but are to be respected. The key is not panicking if they get the better of you, and that comes from being comfortable in the water and having lots of practice to get to that point
That's the reason I always recomend good training at home. Even with a well chaperoned dive after that couple of hour resort course, things can go wrong. The difference between a disaster and having a simple story to tell afterwards is training and experience