Rule 1: It's important to acquire at least some basic knowledge about the history and geography of a place we are going to visit. So when we see, for example, on our way the statue of Frederick the Great, we won't have to waste time on asking who he was.
We live in the PC era and nothing is easier than gathering data. Many web sites, such as ours , specialize in providing detailed information for travelers: geography, weather, recreation, museums, events, shopping, restaurants, and so on.
Buying books, such as travel guides, and maps, is not a bad idea.
Guides and maps of all kinds, and all countries and cities, in discounted prices are sold at Amazon site. It's a worthwhile investment, because ultimately proper planning saves a lot of money.
A most recommended way to prepare a trip is to learn the local language. Some information and tips you may find by clicking here. The best German language course on the web can be acquired by clicking here. You may take the first lessons ($27 worth)free of charge!
Having gathered the necessary information, we may take the second phase: prepare routes.