In one sentence, describe what the following article is about:

If you’re still on the Discord page in the App Store, tap OPEN. Otherwise, tap the blue or purple icon with a white game controller (labeled “Discord”) on your home screen. It's at the bottom of the screen. If you already have a Discord account, tap Login, enter your email address and password, tap Login, and then skip ahead to the next part. You'll need to fill out the registration form by doing the following:   Username — Tap the "What should everyone call you?" text box, then type in your preferred username. If the username is already taken, you'll be prompted to choose a new name.  Email address — Tap the "Email" text box, then type in a working email address.  Password — Tap the "Password" text box, then type in a password you want to use. It's at the bottom of the page. When prompted, tap either Allow to enable notifications or Don't Allow to block notifications. It's in the middle of the screen. This will vary, but usually consists of a challenge in which you need to select all of a specific type of image (e.g., cars). In order to complete the Discord setup, you'll need to verify that your email address is valid:  Open your email inbox. Tap the "Verify Email Address for Discord" email from Discord. Tap the purple Verify Email button in the email. Check the "I'm not a robot" box when prompted.

Summary:
Open Discord. Tap Register. Enter your account details. Tap Create an account. Allow or disable notifications. Tap the "I'm not a robot" box. Complete the "I'm not a robot" verification. Verify your email address.