Browsers don't hide on your apps screen. A browser is just another app. Even if you have 3 different browsers, all 3 will wait for you to use it. You can see all of them on your apps screen. Then the choice is yours as to witch browser you want to use. You could keep one but I'm not sure if that would result in the 2 other disabled browsers to disappear from your screen. Just sit in settings waiting to be unleashed!
To find hidden features you can open the device settings (cogwheel icon) and at the top is the settings search bar. Type the name of the setting or feature you are interested in and it will pull submenus up. To find icons long press on any blank space on your display screen and widgets, themes, settings and wallpapers will be accessible.