Welcome to 3FC!
You've come to the right place! You might start with checking out Diet Central, to see if there's a forum there for an eating plan you think you could live with. The best advice I can give is to think about changing your lifestyle, but one step at a time. You don't have to change your eating overnight, or give up all your vices and become a super fitness hero. It can all start with simple steps, like portion control, choosing chicken more often than beef, watching sodium content and cutting back on that, drinking a little more water, and moving a little more each week than you have been. You might just pick one or two new 'habits' in each area: eating, water drinking and exercise, to work on for the rest of March, then assess your progress and set a few new goals for April, if you're ready for a new challenge.
Check out the Exercise forum for ideas on ways to move more, doing something you enjoy. Remember, too, that exercise can be anything that you enjoy doing, and doesn't have to happen in a gym. You can walk the dog for 15 mins, then get out and do 15 mins of gardening or yard work, and that could be 30 mins more than you were doing before! Try making a list of anything "active" you enjoy or would like to try, in the gym or out, and that will give you the start of an exercise plan.
Best of luck to you in your weight loss journey. Please jump in any place you like, and keep posting! Hope to see you around the forums.