ppm is the Programmer's Package Manager.
it's used to manage your existing perl modules or install new modules (those with a .ppd extension).

since you will have enough hazzle installing modules at some later point of your perl experience, ppm isn't really relevant to you at the moment.

i'd suggest you first get an editor, since notepad can get a bit annoying.
i use ConTEXT which is freeware and highlights perl code, displays line numbers, etc.
http://www.context.cx/

after you installed perl, most probably there's a PATH to your perl.exe file.
thus, to create a perl script and then run you do the following :

open editor.
write program.
eg:

#!perl
print "HELLO PERL-WORLD";
[download]

save file as yourfile.pl
open DOS command prompt (since your on win)
cd into the directory "yourfile.pl" sits.
type : perl yourfile.pl
the text (ie HELLO ect.) appears in the dos-window under the 'perl yourfile.pl' command.

also there's a serious amount of really good tutorials around on the net.
eg : http://aspn.activestate.com/ASPN/docs/ASPNTOC-APERL5.6.0/