There are many sources of information available on the Internet about becoming a Scout, but a first step should be to locate a unit in your area.
To find a unit visit http://www.BeAScout.org. This site's search feature can be found by clicking on the "join scouts" link on the top left of the home page or going directly to the search page at http://www.beascout.org/join.html.
This site is also a good source of general information on opportunities for youth and adults, activities, ranks and advancement, cost, and registration.
For Scouting in the Pine Tree Council Area (Maine), visit the Districts Page at http://www.pinetreebsa.org/index.htm, and select the district in which you live or are moving to. Contact information for each district, including district web sites, are located on this page of the Council web site.