Aachen Hauptbahnhof (Main Station) is very convenient!
When you need a bus from Aachen to the Netherlands (Heerlen, Maastricht, or Vaals), then go to the Main Station, there are a lot of buses going to those directions. If you need trains to Cologne, Düsseldorf or Hannover, then you also need to go to the Main Station. Aachen Main Station is very convenient; you can get buses, trains and also taxis there. If you are hungry, Mc. Donald’s, Zeit Café, kiosk and other bakeries are ready to serve you. If you are bored and don’t know what to do, there is a big bookstore and you can get any kinds of books and magazines you want (computer books/magazines, fashion magazines, comic books, etc). It is very easy to buy train tickets, you just hit the vendor machines. If you need to get some different places, just ask the people who work there and they will help you.