I have noticed that quite a few people have been wondering HOW to get involved with their communities and what they can do; since I like fiddling around on the computer and am working on making plans for what to do in the future, here is a big list of ways to get involved and gain experience:
World Wide Opportunities on Organic Farms
WorkAway
HelpX
EcoVillages
Permaculture Projects
Global Restoration Network
*note: the list is mainly a USA list since that is where I live; please feel free to compile a list for your own country and post it here*
National Wildlife Rehabilitators Association
National Park Service
Fish and Wildlife Service
Forest Service
EPA Volunteers
National Wildlife Federation
NWF Community Habitats
Volunteer.Gov
US National Arboretum
Natural Building: Join The Team!
US Conservation
Sea Turtles
Mycelium
Marine Mammal Center
US Botanic Gardens Plant Health Scout
US Botanic Gardens General Horticulture Volunteer
United Plant Savers
And remember to have fun and stay safe!