What truth are you looking for? The question "Free?" is in reference to what exactly?
Your FB ad. said sign up for "Free" art lessons. May be you meant Sign up "Free" for art lessons ?
AZV Art answered:
Oh, I see. However I did not place an ad on FB and unfortunately, I'm not able to see which FB page you're referring to. I guess the ad was placed by a Craftsy affiliated page. Thank you for responding.