First-time SDCC planning: prioritizing film/TV panels, Hall H lines, and crowds

[SamuelL]

I'm planning my first trip to San Diego Comic-Con this year and I'm already feeling overwhelmed by the logistics. I managed to get a badge for Saturday, but I have no idea how to approach planning my day around the massive panels, exhibit hall, and off-site events. I'm particularly interested in the film and television presentations, but I've heard the lines for Hall H are legendary. Any veterans have practical tips on a realistic schedule, what to absolutely prioritize, and how to navigate the crowds without missing the best exclusives or experiences?