you can call honda finance / or what ever company holds the title/loan on the car. Find out what your balance is.
worst option is probably taking the car to honda and seeing what they'd give you to buy it back / but is probably the fastest solution to selling it.
Lookup the values on kelly blue book
New Car Prices, Used Car Prices, Blue Book Value, Car Reviews - Official Kelley Blue Book Site to see what they say it's worth to give you an idea on dealer buyback, vs. selling it privately.
You could also work something out for a person to take over your payments depending on your monthly payments / interest rates.
Basically you just want to avoid being upside down - meaning the loan amount you owe on the car is higher than what kelly blue book, or what a dealership is wanting to pay you for the car.
You could post the car here for sale, post it on autotrader, ebay, craigslist, to see what kind of interest is out there. Craigslist and this site are free to post the car for sale.
Hope that helps