Install additional attic insulation at right angles to the previous layer. You don't have to use the same type of insulation - it's fine to use batts or blankets over loose-fill, or vice versa. Upgrading from three inches to 12 inches can cut heating costs by 20 percent, and cooling costs by 10 percent.
Contact the local chamber of commerce for promotional literature or talk to your real estate agent about welcome kits, maps, and other information. You may also want to visit the local library. It can be an excellent source for information on local events and resources, and the librarians will probably be able to answer many of the questions you have.