This document outlines three case studies of companies that successfully generated qualified leads through Facebook advertising. The first case study was an aviation company that created separate ads and landing pages for each training course, generating 579 leads at $32 per lead. The second was an internet service provider that created an ad directing people to its online application form, generating 90 online applications at $278 per application. The third was a travel agency that created separate ads and landing pages for each travel package, launching new ads regularly to avoid ad fatigue, generating 144 leads at $171 per lead. The document emphasizes having a goal, identifying target customers, defining leads, planning strategies, and monitoring results.