A good place to start is just log what you eat, get the hang of it. It's really eye opening! Measure everything with measuring cups or a food scale. I prefer the scale, you can't fudge it like you can with rounded measuring cups. The "food browse" option is more user friendly than the search bar. You'll probably end up making a bunch of custom foods too, which is a pain at first but really helpful once you've built up a library. I use calorieking.com to find nutrition info too. We're a friendly bunch here, so come back often