Tips for US Vans

Hello US-Car Fan-Gemeinde, am for the first time in this forum, otherwise stop me at the vans of a German manufacturer. My question would be something general about Vans!? As with many others such a car is a youth dream of me and I would like to know if I can now possibly realize it and should? How about the consumption? Cost insurance and tax? Do you have to have a lot of idea of the matter and how reliable are they? Favorably you get it!!! I look forward to your help and thank you already in advance. Gruss Alex.