Hi Dock,
Welcome to Fishing Reminder.
Major is the best and minor is the second best times. Here is a page that explains it - https://www.fishingreminder.com/best-fishing-times-explained
The tide info comes from your nearest tide station. If you only have one tide station then you might have to adjust the time to your local situation. For example, if your tide station is near the beach, you might have to add 30 minutes if you are 5 miles inland on a tidal river.
To change your location, click on Fishing Times (top left on every page). Then click on Manage Locations. You can then select your location either by name or on the map. You can have as many locations as you like.
If you use the Find My Location function, it will default to your internet service location, which could be a long way off. (correct me if I am wrong) if you have GPS active the Find My Location should be fairly accurate. But search by name or map is the best way to go.
itsaboat mate...Life is just a boat and then ya marry one !