OK just to add a bit to my earlier post.
This is ADW launcher on the HTC One, but pretty much any launcher will do most of the same things, although each has it's own particulars.
Home screen has GSam Battery monitor in upper left.
Then Simi Clock (this is an app launcher - clicking on left side will open a menu of up to 5 apps, as will the right side.
Then Simi weather (same as the clock - can launch up to 5 apps)
Then, the full moon kind of thing is Circle launcher - another app launcher- I use it for frequent contacts (see below in action) Ahh! Just noticed the black menu bar with Circle Launcher - Not that it matters for this.
The heart is direct dial to my wife.
Here is how I have my app drawer set up - I have apps grouped according to function to cut down on clutter and make finding apps quick if I need to as I don't put many apps on my home screens. I put a few under the various launchers, of course some on the dock bar, and I have the calendar widget covering most of the next screen, with 3 folders underneath with more common apps grouped there.
The app drawer is accessed by swiping up on the screen (launchers let you assign different tasks to different actions. I choose swipe up as open app drawer). The android in the center is a shortcut to the contacts app, not app drawer as I don't need that due to the gesture.
I still haven't got everything how I want it on the One (need to install a lot of apps yet) but the basic structure of my homepage is the same as my prior phone and has been pretty much unchanged for a couple years. I do tweak wall paper or fonts on occasion, or add or delete app shortcuts as my usage changes.
This set up works well for me. I like to try to keep things uncluttered and organized. Others would be bored with it I guess.
This is the huge strength of Android. How things work is pretty much up to you.