Can I add a recipe from a website or blog?

Not directly yet. For now, you can write it in yourself. On the website, go to My shelf and click + Add recipe. In the app, tap the + on the Shelf tab, then Add recipes, then Write it yourself. See Can I add my own recipes?

We're working on more ways to add recipes, including from a website or blog.

Used Eat Your Books? See I used Eat Your Books. What changes?

The online recipes and personal recipes from your Eat Your Books shelf are already in your Recipe box, and they show up in your searches.