If you're really serious about getting some abs, then the best way would be to hire a good PT and he'll set up a good workout routine and diet--probably be the best money you ever spent.
It's not impossible to get good abs doing it yourself--but it is very rare.
Really I think the diet is even more important than the workout. You can work out like crazy, but without the proper diet it's going to be all for nothing.
I would suggest six small meals a day.
You need carbs, good fats(yes, we're not eliminating fats), and of course protein.
Eat good carbs and avoid the bad...The Good- Brown rice, sweet potatos, vegetables (lots of veggies) and fruit (not too much though). Avoid breads and pasta like the plague (I know, I love pasta to
Limit the fat intake, or I should say--moderate your fat intake to good fats like olive oil, avocados, and salmon.
Lean proteins like tuna, baked chicken, and egg whites are essential.
Finally, lots of water, because dehydration will cause you to retain fluids.
Leg lifts, crunches, and running--all the workouts we hate.
Seriously though--hit up a good PT for the right routine.