I have installed two things :
A wi-fi access point through this tutorial : https://learn.adafruit.com/setting-up-a-raspberry-pi-as-a-wifi-access-point
And a Apache server from this tutorial : https://www.raspberrypi.org/documentation/remote-access/web-server/apache.md
Now, from my phone for example, I can freely connect to my wi-fi access point and then access the apache server using the address 192.168.42.1
But I do not know how to assign a hostname, so that I can access my apache server using a link like "h t t p : / / my-raspberry-pi" instead of "h t t p : / / 192.168.42.1"
If my English can seem awful, know that I am French and that I use Google translator to try to express myself as clearly as possible