Hello @RandyH7767 ,
I'd recommend checking out our New Customer Hub, under the Resources tab at the top of the Community. Regarding your actual inquiry, our section for adding contacts would be the best resource. Those pages will contain articles also available via the Help tab in your account, providing step-by-step and visual guidance on growing your contact list compliantly and organically, as well as importing your existing contacts.
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"There's a multitude of ways to engage your audience through us using your social platforms - via ads, social post metrics, email links, and more! " - Will
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"Target your most engaged contacts by creating a segment. Create a special offer or show your appreciation!" - Caitlin
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"Greet new contacts with one or more automated Welcome Emails depending on their interests or your business goals." - Nick
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