I was in Budapest for 6 months on a project and during that time we spent a lot of time to try out a lot of restaurants and bars. In addition to that I had my family down for two weeks and a total of four weekends, so I also found out where to go with kids. Budapest is actually a very good town for kids; I have never seen so many public playgrounds in any city before.
For the usual travel information buy one of the popular travelling guides or go somewhere else on the web. This is just my personal experience.
My Budapest map