This is what I would do:
Google > nomenu.com - this site is managed by Tom Fitzmorris, cookbook author, restaurant critic, and for over 17 years has had a radio talk show 3-6 pm Mon-Fri devoted to nothing but food, recipes, restaurant recommendations, etc. On nomenu, you can find almost every restaurant in NOLA listed either alphabetically or by neighborhood, with his ratings and recommendations. There's no better place to get the info you need.
Locally, the radio show is on 1350 AM and you can stream it from the web site.
For general sightseeing info on where to do go and what to see there's the convention and visitors bureau web > neworleanscvb.com and there are several forums in the Times Picayune web mentioned above at nola.com.
There are 3 visitor centers around town with staff that are very knowledgeable, most are licensed tour guides and very helpful:
Visitors Center -2020 St. Charles Ave (Mon-Fri only, I believe it's 8:30-5:00pm) within walking distance of the Garden District, Commander's Palace restaurant and Lafayette Cemetery
Basin St. Station - 501 Basin St (open 7 days a week 9-5) and right next to St. Louis I Cemetery - Marie Laveau, Paul Morphy, are a few of the notables buried there. This is open to the public (Mon-Sat 9-3 and Sun 9:00 -12pm), there are several tour companies providing tours, or you can walk around on your own.
St Ann St Visitors Center - along Jackson Square