first you need to qualify farm for a wind turbine,do a study to find average wind speed on your land,the best wind turbine doesn't make power without it.
then you need determine the amount of watts you will require to size your system,design it so you can expand as your need grows,but you started at the best place I found for a brain trust on good advise and experience on renewable energy.don,t think there is any better.do a lot of reading here and you will save your system from the dreaded "magic smoke" good luck.