Yeah, D C Mishra is right, Go Launcher is simple and really easy to use with a lot of themes. Visit Google Play store for more options. I use Smart Launcher, it's simple, easy to use and lightweight.
You may Install "Go Launcher" and use it.
It depends on the home launcher you use. Usually when you open app drawer and press menu key (left soft touch key), an option for the app drawer will show up. Some show add folder and sort.