I'm planning to move from Copenhagen to Germany and then to Netherlands through train. However, am not sure about the tickets and stuff. Tried searching online and it seems really confusing for someone who wants to travel for the first time in Europe on a train.
Would appreciate if someone can kindly guide:
1. I read there is some discount if tickets are bought in advance online. How many days in advance should one buy them? Also, which website should one use? Is there any refund if the tickets are cancelled?
2. I'm basically travelling to explore the places and don't really want to rush from one place to another just to take pictures and check-mark the to-do list as some people do. How many days do you think one should give to each country? I've put Germany and Netherlands in my list but would really like to add one more country as I think its doable since I have around 14 days. I'm not sure which country to add since I would like to visit Switzerland and Venice/Florence or any other place which has more to offer but am not sure which one would be easier and less hectic. Any suggestions?
Would appreciate advise from experienced travelers :-)