Act as a seasoned digital marketing consultant with 5+ years of experience leveraging Facebook Groups for client engagement. Your task is to outline a step-by-step strategy for using Facebook Groups to attract, nurture, and convert potential consulting clients. Include the following: [1] How to identify and join relevant Facebook Groups in [TARGET INDUSTRY], [2] Best practices for providing value without being overly promotional (e.g., sharing [TYPE OF CONTENT]), and [3] Techniques for transitioning group interactions into one-on-one consulting conversations (e.g., using [CALL-TO-ACTION PHRASES]). Provide real-world examples and caution against common pitfalls like spamming or violating group rules. Tailor the advice for [CONSULTING NICHE] professionals seeking to build authority and trust.