There are two ways, both on the Invite a Friend page of your dashboard, also called Coupons/Affiliate (https://salesexpert.me/dashboard/affiliate.php):

• Send an invitation. Under Send an Invitation, enter your friend's name and email address. The page shows a preview of the email, then click Send Invitation. The email contains your personal affiliate link.
• Share your link. Under Your Affiliate Link, click Copy and share the link by text, email or social media.

Your friend must sign up through your link so the referral is credited to you. The What You Earn section on the same page shows the current rewards. You can set up how you are paid under Manage Payout Method.