Get aquainted with professionals and volunteers of various
agencies and organizations (SAR, Game Wardens, Scouts,
Sheriff Dept., volunteer fire or police dept etc.)
that do the kind of activities that you wish to learn or
practice. They are often looking for help and then you can
try those activities on the up and up, learn the laws,
make new friends, gain more opportunities to help others.

For example, I have a friend who is a game warden and I have learned
tons about hunting and fishing and gained access to some nice areas to hunt and fish too.