Within "My Kitchen", you can save your favorite recipes and organize them into customized folders. It's very simple:
You access My Kitchen in the bottom bar of the app, through the bookmark button (next to your profile).
To create folders, just click on the (+) button and choose the name you want.
To save the recipes, just click on the bookmark icon inside the recipe (it's right there next to the heart).
All of them will automatically go to the "All" folder, but by clicking on "Choose folder" you can organize them as you prefer.
All your saved folders and recipes will be available in the "My kitchen" area.