Commenters: We get it. There is no year 0. You know what OP means. If you can answer the question you know OP to be asking, please feel free to point out that there's no year 0 in your otherwise in-depth answer about what life was like for a Germanic tribesman in the year 1.
OP: Feel free to add a description to your post so potential commenters know that you got the message.
This is my first time answering one of these questions and english is my second language. I am fairly new to my studies in prehistoric archaeology, but I'll try to give you as good an answer as I can.
The thing about Germanic tribespeople is that the term is a roman one, one used to describe a group of people who likely weren't "one" culturally or otherwise and who, also likely, didn't see themselves as such.
When romans described the germanic peoples in their litterature, they often used "topoi" (topos in singularis), a generalisation or rhethoric technique, that's a bit hard for us to define these days. If you bear this in mind though, you can look at Tacitus' Germania for further reading. In the same text you will see that he describes a bunch of different "tribes" and that they seem to lead quite different lifestyles. Treating germanic tribes as one cultural identity with the same lifestyles is just not doable.
Depending on where (or who) in the "germanic area" you'd like to know more about, I may be able to point you in the right direction.