Any good tips about how to travel in rural areas where train travel is not an option -- and without renting a car? Is there an alternative besides Uber or Lyft?
Why are you assuming there will Uber and Lyft? Did you research?
Without a car or usage of a train you'll need to rely on busses for transport. Local ones are infrequent. Takes some scheduling and can eat up hours of time. Cross county ones are good.