http://scouting.org/
BSA's homepage where you can find out just about anything about Scouting. You can also take online training (specifically Youth Protection which every registered adult is required to have).
Your local council's webpage. There is also a Scout Shop here to purchase your uniforms and other scouting needs. http://www.yuccabsa.org/
The place to buy all your scouting supplies online. http://scoutstuff.org/bsasupply/