I really like Jamie's 5 Ingredients book. It's a decent everyday cook book, and this is coming from someone who really is not a fan of his. The egg and mango chutney flatbreads are good. He uses natural yogurt, flour and olive oil for the bread, I was sceptical, but it is really simple and pretty decent. I also like the creamy mustard chicken (but needs some experimenting to get the consistency right), the peanut chicken and the garlic mushroom pasta. All the nutritional info is also included. There is really good variety of recipes in the book, so if you can get it cheap it's worth it. I got it from the Book People when they had it as part of the selection brought into work.
Fitbit sounds great!! They can be really motivating to do more steps during the day.