At its core, Instagram is a social media platform, and a highly visual one at that. Every time you open the app, you'll be met with a main feed of recent posts from the accounts you follow. 

At the bottom is a menu bar, which is accessible anywhere you are in the app.

Here's what each button does, from left to right:

Home: Your main feed where you can scroll through photos and videos posted by your friends.

Search and explore: The magnifying glass icon takes you to the Explore page, where you can search and browse content from accounts you don't follow but may be interested in.

Reels: This tab includes short videos (up to 90 seconds long) from users you may or may not be following. You can scroll to the next video by swiping your finger from the bottom of the screen to the top.

Shop: Here, you'll find a collection of Instagram posts that includes items you can buy through the app.

Profile: This icon navigates to your profile page that shows your bio and posts. It's also where you can access your settings. 

Instagram "How to" video