So when someone registers, they will type in their address, right ? Your server will then receive that address, store it in your database. Then you want to display a map with a marker for that address. so you need - a web form and an underlying database - a geocoder, e.g.Nominatim which translates the address to lat/lon - and some display technology for the map and the marker. This can be achieved with Leaftlet or OpenLayers Javascript libraries. I doubt that you can accomplish this all if you are not a programmer.

So when someone registers, they will type in their address, right ? Your server will then receive that address, store it in your database. Then you to display a map with a marker for that address. so you need - a web form and an underlying database - a geocoder, e.g.Nominatim which translates the address to lat/lon - and some display technology for the map and the marker. This can be achieved with Leaftlet or OpenLayers Javascript libraries. I doubt that you can accomplish this all if you are not a programmer.