First Day Jitters

Today marks my first day at a new job as an entry-level marketer. Admittedly, there was a moment when walking through the door where I almost turned back. But hey, no regrets, better to leap and deal with butterflies than to be stuck in that same old rut right? I spent the morning introducing myself to everyone and learning my way around. Now for lunch break: where's the nearest coffee shop because caffeine might just save me today. Any tips for a rookie like me out there?