In fact, some of those are general iOS 11 tips, so they might be of interest to other iPhone owners too.
iPhone X New Gestures and Button Combos
iPhone X buttons & lock screen layout
Waking your phone: In addition to pressing the now enlarged side button and Raise to Wake, you can now tap the screen to wake the iPhone X. Enabled by default, go to Settings > General > Accessibility select Tap to Wake to enable/disable.
Power Down: Press both the side button and either volume button until the slide to power off slider appears, then slide to power off.
While not unique to the iPhone X, Apple introduced a new way to shutdown your iPhone with the iPhone 7 & 7 Plus with their new haptic Home Button. Go to Settings > General and scroll down to the bottom, select Shut Down to power off.
Lock Screen: Turn the flash Light on and off by force pressing the camera icon. The camera can be invoked by either the traditional swipe to the left or by force pressing the camera icon.
Lock Screen Notifications: Now by default, notification content that appears on the lock screen is kept secret until the owner looks at the phone and Face ID identifies you. Dependent on the circumstances you may want to see the notification content appear, for example whilst you’re sat at a desk without having to pick up your phone so Face ID can identify you. To always see your notification previews Go to Settings > Notifications > Show Previews and select Always.
Tap To Wake setting Shut Down Lock Screen Notifications setting
Tap To Wake setting • Shut Down • Lock Screen • Notifications setting
Siri: In addition to saying ‘Hey Siri’ you can now press and hold the side button to invoke Siri.
Re-arranging Home screen icons: Lightly press and hold any app icon to enter 'wiggle' mode. Move and arrange your icons as required. Press Done in the upper right.
Some people don't see this immediately due to the notch and this seems to be a non standard use of the space by the notch.
Apple Pay: Double-clicking the side button now invokes Apple Pay and displays your default credit card. Glance at your iPhone X to authenticate with Face ID and then hold the iPhone X near the card reader.
Magnifier: Due to the loss of the home button this is now selected by pressing the side button three times quickly. To enable, go to Settings > General > Accessibility > Magnifier select Magnifier to enable. In addition you can select Auto-Brightness to adjust the brightness and contrast based on the ambient light settings.
Emergency SOS: By default, pressing and holding the side button and either volume button will activate Emergency SOS. You can enable the ability to rapidly press the side button five times for even more convenience requiring only one hand. To enable, go to Settings > Emergency SOS and select Also Works with 5 Clicks. If you have a Medical ID created, your emergency contacts are also alerted along with your location.
Wiggle mode Magnifier Emergency SOS
Wiggle mode • Magnifier • Emergency SOS
Phone Status: You now see less status information along the top of the screen due to the loss of real estate taken up by the now infamous notch. Upper left shows time and location services icon. Upper right shows cellular, Wi-Fi strength indicators and the battery icon.
Control Center: Swipe down from the upper right. You can also use this gesture to peek at additional status information that was traditionally always shown, including your cellular carrier name, battery percentage, Bluetooth and alarm status.
Battery Life Widget: Apple iOS has a built in battery widget, unfortunately it only shows once you have paired a Bluetooth compatible device that feeds back its battery status to iOS - for example, Beats X headphones. Alternatively, several battery widgets are available to download from the app store.
Pull down Control Center to 'peek' at iPhone status Control Center iOS Battery Widget
Pull down Control Center to 'peek' at iPhone status • Control Center • iOS Battery Widget
Face ID Unlock: Once your iPhone X is awake, unlock by glancing at your screen and swipe up from the bottom of the Lock screen.
Home Screen: Go to the Home screen at any time by swiping up from the bottom edge of the screen.
Multitasking: Swipe up from the bottom edge of the screen and pause halfway up the screen, your current app will be joined by the other open apps, now let go. Navigate and select the app you wish to switch to. To close apps - touch and hold an app until red circles with minus signs appear on the top left of each app - either press minus sign om each app to close or swipe app up off the screen.
App Switching: In addition, when in a App, swipe right on the Home Bar (black or white dependent on the screen background) / bottom of the screen to navigate to the last used app. This even works on the Home screen when the Home Bar isn’t shown. Swipe left and right on the home bar to move through your open apps. Once an app has been selected, the option to swipe to the left is no longer available.
Sliding up enables multi-tasking Open apps Close Apps App Switching
Sliding up enables multi-tasking • Open apps • Close Apps • App Switching
Reachability: Since the iPhone 6 came to be, you had the option to pull down the screen to reach the top elements without re-adjusting your grip by double touching the Home buttons Touch ID sensor. Apple still offers that reachability on the iPhone X even with the button gone. Turned off by default, to enable go to Settings > General > Accessibility and select Reachability to enable. Be warned, this takes some getting used so keep persevering until you nail it.