Just read in "about ban..." topic what PLE can help to learn maya.
I am working in maya unlimited (but i am not a prof still) and for interest download ple5 and what do i am find: ple help is similar with maya unlimited help. What this?

My personal opinion:
PLE do not help to learn anything about maya. I am even thinking: similar help in ple and full maya. WHAT FOR I AM PAY MY MONEY!!! i think alias for huge price must to make A BEST HELP in the world. do you hear me Alias? (joke)

But actually help in maya is TERRIBLE!

and I think, you guys (who was write a "good words" about ple) even do not see ple. just talking.