You've come to the right place. This website is filled with all sorts of tools that will help you learn exactly how to drop those extra pounds.
For exercise, do something that you love to do. If you think of the treadmill, for example, as a chore - then don't do it! Do something that is fun and you will have a better chance of sticking with it. Maybe it's walking with your husband or dog or child... maybe it's swimming. Ideally exercise should be something that you look forward to!
I would recommend reading articles under the "Healthy Lifestyle" section of this site - search the titles and see what interests you. You will learn about nutrition, fitness, and motivation. The more educated you become about your health, the better chance you will have at being successful in this journey!
Best of luck to you!