For me, the safest transport is the train. I always try to use it during my trips because I think it's not so dangerous as traveling by plane. Anyway, for me, it's very comfortable to book tickets online while traveling through Europe. I use this best german railway company usually. Buying train tickets can be as simple as entering the online ticket office of any significant railway company and choosing one of the participating operators. I think that you should try it because it's speedy and comfy. It all depends on the class you want to travel to.
