You'll be spending most of your time in Halo 4 actually playing the game instead of browsing the menus, but it's good to know that the menus 343 Industries has made for the game are incredibly streamlined.
Based on footage from the San Diego Comic Con, we now have a clean look at the tried and true navigation system in Halo 4, which will more or less ensure you spend as little time as you need to get around and customize your character before getting back into the game.
Keep in mind that the menu's for the beta build of Halo 4, so the details may be subject to change upon the game's release.
Halo 4 will be out for the Xbox 360 on November 6, 2012.