Welcome to the Club Rave
Please include the year and trim level in your signature it will help in identifying your future problems. Also add your location in case someone close by can help out with difficult tasks?
The first problem sounds like rock chips cause the front nose piece is plastic so it cant rust?
2nd is the rust just spots or one bigger area only? Dont cover the rust over it will still grow under the paint. The rust has to be removed, then primer, then paint, then clear coat. If this seems difficult take it to a body shop, a small area maybe hard to color match but shouldnt cost much.