Scoutbook is an advancement tracking tool. It also has messaging, forums, service, hiking, camping tracking and calendaring features.
Units do not have to subscribe to Scoutbook, it is a free service provided to every unit. It is an optional service provided by the BSA. Some introductory guides and videos about Scoutbook can be found here: http://bit.ly/scoutbook
Scoutbook is now free for all units; no need for a free trial. If your unit has never used Scoutbook before, one of your key 3 members, Key 3 Delegate, or Unit Advancement Chair (set in my.Scouting,) should log in and setup the permissions for the unit. The term Key 3 is a BSA term, not a Scoutbook term. It stands for the unit leader (Cub Master, Scoutmaster, Crew Advisor or Ship Skipper), the unit Committee Chairman and the Chartered Organization Representative. More information can be found in our Getting Started guide found here: http://bit.ly/scoutbook
Scoutbook currently supports Cub Scouts, Scouts BSA, Sea Scouts and Venturing.
Yes, Scoutbook supports girls in Cub Scouts, Scouts BSA and Venturing.
No, if your unit uses Scoutbook, there is no need to use Internet Advancement.