Is there any tutorial for environments??

I've tried to do the spherical environments and the cube environments with dire results, is there any tutorials out there?
I've had a look but to no avail.

P.s. my help on the PLE dosen't work for some strange reason which I cant resolve using the "if help dosen't work" icon

If anyones got any help on getting the help to work that would be great.

Cheers guys