When I was teaching high-school physics, a group of motivated students asked me to teach them some astronomy and cosmology. So I taught them the basics of astronomy from a Dutch book, and chose Rowan-Robinson's book as the textbook for the cosmology part. I chose it because of its modest size and lenght, its relatively recent publication date and its accessibility. Nevertheless, trying to teach 17-year-olds about relativity and such is an ambitious task, and I had my doubts whether or not the book was up to it. It was. Apart from having to make various derivations more explicit, the book proved to be self-contained and was highly useful. Therefore I strongly recommend it to anybody who's interested in modern cosmology, but has had no prior exposure to it. This is a great book to learn from!