Where to put program/script
 

If I've written a script or program, where is the proper place to put it (or a symlink to it) so it is executable by everyone?

I would usually use:
/usr/local/bin

/usr/bin should be in everyone's $PATH

I agree with both, but permissions do not allow it for regular users.
Is this normal?

On a somewhat related note how do I see what users are members of what groups?

Regular users shouldn' have write access but they should have access to the directory.

To find out what groups you are in - just type:
groups

Depends on how your machine is set-up...

And
less /etc/groups
will show you who's in which groups...



Cheers,
Tink