The film look is currently enjoying a resurgence, and with that have come many preset packs and the like. While some of those are great, practicing how to create the look from scratch is a good way to learn to be a better editor. This helpful video will show you how to do just that.
Coming to you from Evan Ranft, this fun tutorial will show you how to emulate the look of film using just Lightroom, which includes work with the tone curve, color and contrast adjustments, split toning, and adding grain. The great thing about doing this from scratch is that you'll get a better understanding of the different aspects of tonality, color, etc. that create that look, and it'll help you to tweak it to exactly your taste. You can also then save it as your own preset to quickly apply to any photo you please. While Ranft's tutorial will definitely get you to the right spot, remember that at the end of the day, it's purely about your taste, so once you learn and understand how each adjustment contributes to the overall look, play and experiment a bit to find something you really love.