Not sure if you can be a leader? Yes you can! You aren't in it alone -- the current leaders in the Troop are more than happy to help you through anything that comes your way. All you need is a positive attitude, a willingness to be in front of a group of 4-10 girls, and time to plan.
GSHOM requirements to become a leader or co-leader:
Journey summary guides - ALL LEVELS:
Daisy Quick-start guides:
Brownie Quick-start guides:
Another council's list of "meeting plans" for almost all badges and journeys for all levels:
Great blog on Daisy and Brownie meeting planning (see the Previous Posts section for a progression from Daisies in 2012 to Brownies):