Free and easy environment for learning Common LISP under Windows?

Wanted a simple environment for use in the University. Requirements are as follows:

— Ease of use

No emacs's! =) Also don't need super-fancy IDE. Ideally, code editor with syntax highlighting and some more nice features (what's important to Lisp?) + run the interpreter from the code editor flick of the wrist by pressing the button "Run".

Free

— Portability

The ability to run from the flash drive / network drive. Undemanding to additional libraries, etc. for computers, no nothing to put will not allow myself to put will not.


Torture Google little Dali: are or the command line interpreters, or the powerful and paid IDE solutions from the category of "first try attitude." In General, the impression that this issue in the world of Lisp somehow all is sad. I will be very glad if it is false )