Amazon

“Your Kindle will automatically go into sleep mode after a few minutes of inactivity and a screensaver displays. This static screensaver uses no battery power. To put your Kindle in sleep mode, press and release the Power button. To wake up your Kindle, press and release the Power button.”
― Amazon, Kindle Paperwhite User's Guide 2nd Edition

“Getting Started
Setting up your Kindle Oasis
Kindle controls
Status indicators
Keyboard
Network connectivity
VoiceView screen reader
Special Offers and Sponsored Screensavers
Chapter 2
Navigating Your Kindle
The Kindle Home screen
Toolbars
Tap zones
Chapter 3
Acquiring & Managing Kindle Content
Shop for Kindle and Audible content anytime, anywhere
Recommended content
Managing your Kindle Library
Device and Cloud storage
Removing items from your Kindle
Chapter 4
Reading Kindle Documents
Understanding Kindle display technology
Customizing your text display
Comic books
Children's books
Images
Tables
Interacting with your content
Navigating a book
Chapter 5
Playing Audible Books
Pairing a Bluetooth audio device
Using the Audible Player
Audiobook bookmarks
Downloading Audible books
Audiobook Library Management
Chapter 6
Features
X-Ray
Word Wise
Vocabulary Builder
Amazon FreeTime (Amazon Fire for Kids in the UK)
Managing your Amazon Household
Goodreads on Kindle
Time to Read
Chapter 7
Getting More from Your Kindle Oasis
Carrying and reading personal documents
Reading Kindle content on other devices
Sharing
Using your Kindle with your computer
Using the Experimental Web Browser
Chapter 8
Settings
Customizing your Kindle settings
The Settings contextual menu
Chapter 9
Finding Additional Assistance
Appendix A
Product Information”
― Amazon, Kindle Oasis User's Guide