Wineries with a rating of 1 are wineries that I did not enjoy and would not personally recommend. However, it is a good idea to explore wineries that are not recommended too because everyone has a different palette.
Wineries with a rating of 2 are wineries that are satisfactory and represent a typical wine in the region. There will be some wines at these wineries that I thoroughly enjoyed. But, overall, I felt the wine offered was just OK.
Wineries with a rating of 3 are wineries that I felt were of good quality and would recommend for most explorers to visit. If you are looking to join a wine club, I would start here. Hopefully, my tasting notes will be helpful in sorting out which wineries you should visit first.