For an Ag forum this is the most over asked question.  Do a search and start reading.  All the information you need has been posted dozens of times.  I'll help you by suggesting you search for "point to point" or "ubiquiti" or "long range wireless" or "camera wifi" or "shop wifi".  While nearly every install is unique the process of extending your wireless network is the same process.....whether it be 100 ft or 10 miles.