'Too' just means 'as well, in addition', 'else' normally means 'in addition/as an alternative, other/different' as in:
What else do you do on the internet besides watching films?
I sit and home and read; there's not much else I want to do.
In the following examples, there is not a great practical difference between the meanings of 'too' and 'else':
Who else wants to come?
Who wants to come, too?
Student or Learner