We went to Paris for my 40th birthday back in 2005. I bought the book, "Paris for Dummies" and I thought it was really informative and easy to follow. I also talked to others that had been there or lived there for a period of time to get advice on where to stay. We went in November (it was very cold, but got a great deal on airfare) and stayed in the Latin Quarter neighborhood. The metro is very easy to use and can get you to all the sights in the city. If you are going in the summer months, expect large crowds at all the popular attractions and you may want to purchase tickets online ahead of time if you can. I know you can do this for the Louvre. Going in the winter, we experienced no crowds and walked right in to see the Mona Lisa on a Sunday afternoon. It is a beautiful city and we want to visit again when we have the chance.