to SparkPeople! I think you'll find this site is very helpful on your journey to a healthier you. They provide us with numerous tools and resources, my favorite are the nutrition and fitness trackers as they really help to keep me on track and accountable every day. There are also very informative and inspirational articles, blogs and people to help keep you motivated and help you figure out what will help you best.
As for your question about fiber, there are a ton off foods that we eat all the time that have more fiber than you'd think. Spark has a great article on fiber, the amounts we should eat a day and a list of foods and their fiber content. You can find the article here: www.sparkpeople.com/resource/reference_fib
Here is an article from the Mayo Clinic that lists high fiber foods: www.mayoclinic.com/health/high-fiber-foods
Keep in mind the importance of water in our diet, either by drinking or in water rich fruits and vegetables, especially important when increasing fiber intake.
Keep your goals in focus and follow your plan and you will succeed.