You can sign up for IFTTT via the website by visiting ifttt.com/join. You can also sign up by downloading the IFTTT app from the App Store or Google Play.
When you sign up, you'll create a password with a minimum of 6 characters to create your account.
You can sign up for IFTTT with your email, or you can connect with Google or Facebook.
Using IFTTT is free, and there's no limit to how many services you connect or how many Applets you can turn on.