Sorry folks, I just checked my PW 2013 again. Tapping Menu from the Home Page I get:
1. Shop Kindle Store (shaded out since I have turned on Parental Controls and blocked it)
2. Kindle Free Time
3. Vocabulary Builder (shaded out since I opted not to use it)
4. Experimental Browser
5. Settings
6. Cover View
7. Create New Collection
8. Sync and Check for Items
Notes are NOT shown at the Home Page. I am using version 5.4.3.
If I open an eBook I get:
1. Shop Kindle Store (shaded out since I blocked it with Parental Controls.)
2. Settings
3. NOTES
4. Book Description
5. About the Authors
6. Landscape Mode
7. Sync to Furthest Page Read
8. Reading Progress.
I do not use Calibre which most folks use and have the latest firmware version installed which most folks do NOT have installed for a variety of reasons.
The OP should have the same display as me or, if he doesn't see Notes where I see them, either he does not have the proper firmware version installed or something is wrong with his unit.
Plus, you can see all your Notes and Highlights on all your Amazon eBooks here:
https://kindle.amazon.com/your_highlights
By the way, the PW 2012 with its latest version 5.4.4 has exactly the same setup as the PW 2013.
I have the Home Page set to show Collections and sort by Title.