Gatwick (i.e. the South Terminal) has a railway station directly attached to it, so finding the train is easy. Before you enter the station there are ticket offices where you can buy a ticket to Norwood Junction. Above the entrance to the station is a large board on which the next departing trains are indicated. There are trains that go directly to Norwood Junction, but if that takes too long, you can also take the first train to East Croydon (there are 9 trains an hour to that station), and change there for a train to Norwood Junction.
You could also take a taxi from East Croydon to our place.
You can buy a ticket at the ticket office, but it is a better idea, especially if you fly with Ryaniar, to buy a ticket on the plane.
It is also possible to take a bus into Victoria Station; depending on the hour of the day, the trip can well take two hours.
From Heathrow the connection is good, although it can take up to 2 hours before you reach our home. If you arrive before 9:30 am, your cheapest option is to buy a six-zone single for the trip from Heathrow to Victoria Station, and then a train ticket at Victoria to travel to Norwood Junction; if you plan to get on the tube after 9:30, you're better of with a six zone travelcard, that gives you access to all means of transport. An easy to follow route is to take
Better would be to take a bus towards Croydon. It leaves from the Bus Terminal close to Terminal 2 (there is a free bus from Terminal 4 to the other Terminals at Heathrow Airport), and has a stop at the East Croydon Station. It is cheap, and, in the evenings, very fast. You can take a taxi from East Croydon to our place, or take the train to Norwood Junction.
You could also get a taxi from the airport to our home, but that is expensive.