What you need to know and more can be found through these sites. Dedicated time to learning about German wines will pay off for years to come.

http://www.vdp.de/en/vdp/klassifikation/the-refined-vdpclassification/

http://www.vdp.de/fileadmin/user_upload/PDF/Der_VDP/Klassifikation/2016_Seminarbroschuere_by_VDP_eng.pdf

http://www.germanwines.de/aktuelles/news/details/news/detail/News/white-pinot-varieties-ascendant-in-germany/

http://www.germanwines.de/press/pressrelease/details/news/detail/News/decanter-pinot-noir-from-germany-tops-global-pinot-tasting/

The video here is by no means an exhaustive list, and I wish it mentioned which were grapes and which were wine production regions, I do think it is a good start.