LogFAQs > #958402280

This is my recommendation, if you want to loose belly fat, focus a lot on cardio at the beginning. You can start of to do a lot of abdominal exercises but the muscles wont be visible underneath the fat until you actually start to loose fat to some extent first (that is depending on how much belly fat there is and also if you want more visible abdominal muscles in the first place of course)

At the gym, I personally recommend starting with alternating between treadmill (60 minutes) and crosstrainer (20 minutes) every other day. So one day treadmill, next day cross training, then back to treadmill and so on.

Start carefully to go easy on your heart and prevent injuries, I suggest walking on the treadmill for 30 mins at 6km/hr setting then increasing the speed to 8km/hr for the remaining 30mins. Do this for a week then gradually increase the speed.
After 4 weeks of regular cardio training I suggest jogging straight away at 11km/hr to reach 10km/6.21mi well under an hour.

As for the crosstrainer, begin carefully and adjust the level so that you get a little resistance without overworking each stride.
If you get really sweaty and breath heavily at the end of the session youre on the right path, but stop exercising right away if you get difficulty breathing, get really dizzy, your pulse gets really high (well over 100beats/m) or if you feel chest pain. Also make sure youre well rested before each training session, this is really important.
After visibly loosing belly fat, then I suggest adding more abdominal exercises but dont forget to train the rest of your body as well.

I lost 16kg/35ibs in three months doing the treadmill crosstrainer combo but I also go straight to weightlifting after.
Also, as pointed out by others here, consume less calories and eat less overall, especially before the training session.
Make sure youre well-rested before each session, start carefully and then increase intensity.
Hope this helps.