I'm new to this app. How do I find the food database to look things up?

If you are using the web version right now, there is a current bug. Clear your browser's cache and log in again. Navigate to FOOD > Database. You can not add food items to your Diary from this page though, it is more for browsing for and editing the database. To add food to your Diary, navigate to FOOD > Diary and then click Add Food, then type the name of an item, then Search.

If you are on the mobile app, start from the Diary, tap Add Food to one of the meals, then tap the search icon (magnifying glass). Or tap the barcode icon to scan a barcode.