How easy is your train/rail system to navigate? My sister and I are from Arizona where we don't use train travel. We want to visit Stirling Castle and maybe Blair Castle and are thinking about taking the train instead of paying a tour company a lot of money to drive us there. Are the trains reliable and how often do they run from Edinburgh to Stirling & back? Is there a place I should look for a train schedule? We would be doing our exploring on a Thursday in June.