Act as a seasoned startup founder with [10+ years of experience] in attending and speaking at global conferences. Provide a step-by-step guide on how to effectively attend and network at [TOP-TIER CONFERENCES] like TechCrunch Disrupt or Web Summit. Include tips on securing [EARLY-BIRD TICKETS], preparing an elevator pitch, and leveraging social media to connect with [INFLUENTIAL INVESTORS]. Be detailed about pre-event research, on-the-ground strategies, and post-event follow-ups to maximize ROI.