I have created content that I'd like to post on a landing page, which would require someone to fill out their contact information to access it. This way, I can create social media advertisements or post links on my marketing material to capture the lead's information.

A good example of this is a "Condominium Buying Guide", where I can create a paid social media advertisement targeting potential condo homebuyers, with downloading that guide being the CTA. Then after they download it, it gives me an opportunity to follow up with them since they input their information.