3D Touch will change how we use our iPhones3D Touch is one of the biggest changes to happen to mobile interfaces in quite a long time. It has the potential to significantly change how we use our iPhones each day. But since it\u2019s so new it can be a little confusing for users.Not to worry, in this slideshow I\u2019ll show you how to get the most out of 3D Touch on your iPhone 6s or 6s Plus.Here\u2019s what\u2019s in this 3D Touch slideshow:How to adjust 3D Touch settings How to take a selfie How to enter the multitasking screen How to peek at Mail messages How to peek at an image in Photos How to activate a Live Photo wallpaper on your lock screen How peek at a video in a message How peek at a pin in Maps How peek at songs in albums in the Music app How to turn your iPhone\u2019s keyboard into a trackpadHow to adjust 3D Touch settings on the iPhone 6s or 6s PlusImage by Thinkstock3D Touch comes with Medium as the default setting. But you can easily change this by doing the following:1. Tap on Settings 2. Tap on General 3. Tap on Accessibility 4. Tap on 3D Touch 5. You can change the setting to Light, Medium or FirmI opted for the Light setting, which means that it requires less pressure to activate 3D Touch on my iPhone 6s. The 3D Touch settings menu will let you experiment by pressing on an image to see which setting works best for you and is most comfortable for your fingers.How to use 3D Touch to take a selfieImage by Thinkstock3D Touch makes it very quick and easy to take a selfie on the iPhone 6s or 6 Plus. Here\u2019s how you can take a selfie via 3D Touch:1.\u00a0\u00a0 Just press down on the Camera app icon on your home screen. 2.\u00a0\u00a0 A menu will appear and at the top you\u2019ll see the \u201cTake Selfie\u201d option. 3.\u00a0\u00a0 Tap on Take Selfie.Once you tap on Take Selfie, the camera app will automatically open with the front camera activated. So you can quickly take your selfie without having to manually switch the camera.You also have the option to Record Video, Record Slo-mo, or Take Photo when you press down on the Camera icon on the home screen.How to use 3D Touch to enter the multitasking screenImage by Thinkstock3D Touch offers a very quick way to get to the multitasking screen on your iPhone 6s or 6s Plus. But it can be a bit tricky the first time you try to use it.Here\u2019s how you can access the multitasking screen via 3D Touch:1.\u00a0\u00a0 Push down on the left side of your screen. 2.\u00a0\u00a0 Push down again until you feel a pop and see the multitasking screen.You might mess it up the first time or two, but you\u2019ll get the hang of it.Note that if you push down on the left side of your screen, hold and swipe to the right you can move to your previously used app. This is where some folks get confused as they try to access multitasking and end up moving between apps instead.Don\u2019t let it throw you. Once you get used to doing it, you can easily access the multitasking screen with 3D Touch or opt to move between apps. It\u2019s one of those situations where practice makes perfect!How to use 3D Touch to peek at Mail messagesImage by Thinkstock3D Touch functionality has also been added to Apple\u2019s Mail app. To preview a message in mail, just press down on it from the Inbox screen. A preview will popup and you have the option of pressing down again to open that message.Note also that when peeking at a mail message, you can also scroll down to Reply, Forward, Mark, Notify Me or Move Message. So 3D Touch makes it very fast to see and act on your mail messages right from the inbox screen.How to use 3D Touch to peek at an image in PhotosImage by Thinkstock3D Touch lets you quickly peek at any image in the Photos app. Just press down on it and you can preview the image. But note that you can also Copy, Share, Favorite or Delete an image while peeking at it.I\u2019ve found that using 3D Touch in Photos can be a real time-saver. As I\u2019m scrolling through a huge list of images, something will catch my eye every once in a while. By pressing down on it, I can quickly share it or make it a favorite, or in some cases just delete it altogether.And the great thing is that 3D Touch lets you do all of this without actually opening the image while you are using the Photos app on your iPhone 6s or 6s Plus.How to use 3D Touch to animate a Live Photo wallpaper on your lock screenImage by ThinkstockLive Photos is a neat new feature on the iPhone 6s and 6s Plus. With Live Photos you\u2019ll see about three seconds of animation when you press down on a photo. But did you know that you can use a Live Photo as your lock screen wallpaper? And yes, it will animate if you press down on it.To use a Live Photo as your lock screen wallpaper, just do the following:1.\u00a0\u00a0 Tap on Settings 2.\u00a0\u00a0 Tap on Wallpaper 3.\u00a0\u00a0 Tap on Choose a New Wallpaper 4.\u00a0\u00a0 Tap on Photos 5.\u00a0\u00a0 Tap on your Live Photo 6.\u00a0\u00a0 Tap on Set then tap on Set Lock ScreenNow your Live Photo will appear on your lock screen.To see your Live Photo animate, just press down anywhere on your lock screen.Live Photos add a whole new wrinkle to lock screen wallpaper!I used a Live Photo of one of my parrots, and it\u2019s quite funny to see her moving on my lock screen when I press down on it. Live Photos as lock screen wallpaper can be a fun way to freak out people who don\u2019t know about that feature, they never expect to see your lock screen wallpaper move!How to use 3D Touch to peek at a video in a messageImage by ThinkstockSending videos to friends and family via iMessage is always a fun thing to do. But with 3D Touch you can now peek at videos in any message on your iPhone 6s or 6s Plus.Here\u2019s how you can do it:1.\u00a0\u00a0 Press down on the video and it will pop up and start to play. 2.\u00a0\u00a0 To make the video full-screen, press down on it again.Using 3D Touch to quickly peek at videos in messages is a great way to get a taste of the video without having to open it completely. And since another press opens it full-screen, I\u2019ve found myself using peek frequently rather than opening the video full-screen by default.How to use 3D Touch to peek at a pin in MapsImage by Thinkstock3D Touch also works in Apple\u2019s Maps app on the iPhone 6s or 6s Plus. One very helpful aspect of this is the ability to peek at a pin in Maps. To peek at a pin in Maps, just press down on the pin and a menu will pop up. You can get Directions, Call, Open the Homepage or Share Location.I did this with the White House in Washington DC and it worked great. It makes it very easy to access a particular place in Maps and then get all the additional information you need to get there or contact them. And it\u2019s great to be able to share the location with your friends and family if you want to do so.How to use 3D Touch to peek at songs in albums in the Music appImage by ThinkstockApple\u2019s Music app has also added 3D Touch functionality for the iPhone 6s and 6s Plus. Here\u2019s how you can peek at songs in albums in the Music app:1.\u00a0\u00a0 Find the album you want to peek at in Music. 2.\u00a0\u00a0 Press down on the album. 3.\u00a0\u00a0 You\u2019ll see a list of songs that are in the album. 4.\u00a0\u00a0 While peeking, slide up and you can also access the Play, Shuffle and Remove From My Music control buttons at the bottom of the peek window.You can also press down again to enter that album and leave the peek window. 3D Touch is a very fun way to interact with your music, particularly if you are scrolling through a list of your albums and just want a quick way to play one or shuffle-play one without leaving the list.How to use 3D Touch to turn your iPhone\u2019s keyboard into a trackpadImage by Thinkstock3D Touch also lets you move your cursor in a document via your keyboard. Here\u2019s how you can use it.1.\u00a0\u00a0 Open the document you want to edit. 2.\u00a0\u00a0 Press down and hold on the keyboard of your iPhone 6s or 6 Plus. 3.\u00a0\u00a0 The keyboard will gray out a bit and you can now move the cursor to any part of the text of your document.This is a terrific way of using 3D Touch, it makes it incredibly fast and easy to move your cursor anywhere in your document. It basically turns your iPhone 6s or 6s Plus keyboard into a trackpad.I\u2019ve found that moving the cursor around this way sped things up considerably as I was doing edits on documents. Once you get used to using 3D Touch to turn your iPhone keyboard into a trackpad, you\u2019ll wonder how you lived without it. It\u2019s so much easier to move the cursor around in your documents.