To get started head over to https://radiusplus.com and click the signup link in the top right or head directly to https://radiusplus.com/signup.
After entering your email and password you will want to review the terms of service before signing up.
After clicking signup we will send you an email to the email address you've provided with a link. If you have not yet received an email, click on "Resend Confirmation Link" to send another email. Click confirm on the email from Radius+ and it will redirect you to the log in screen.
After a successful login, you will be asked to complete your profile page. Please enter your name and address. To receive 5 free credits, you must verify your phone number.
Now that you are signed up, you can either head over to the Radius analytical application or to Radius+ to consume more free content.