I think you didn't read the article carefully enough. There is a precise list of things you have to do in order to get into a German university in the middle of the article. It's titled "How to apply in Germany." Also there is a lot of useful information about typical rents, expenses for groceries, etc. and there are a number of links to very rich resources with more details. I think this article is an excellent starting point for anyone who is considering to study in Germany.