find a fun activity
It is great that you have resolved to get more exercise! As far as losing pounds sprostymk pretty much nailed it. Burn 3500 more calories than you take in and you will burn off a pound of fat. But exercise has lots of other benefits: Building muscle (lean weight) and in many cases you will burn a few more calories. Increase your endurance and stamina and you will enjoy your waking hours more and sleep better, and better sleep will help you continue to lose weight. One of the best suggestions I have ever heard is to find an exercise or activity you really like to do. It may take a while, so try lots of things. I, personnally, hate working out in gyms, but I love being outdoors so walking, running, biking, skiing (as you might guess by my screen name) keep me active. Good luck!