What to do first?

ok, iv got "learn c++ in 21 days" it says ill need a compiler, whats a good one to get?

and thanks Eleven for posting, ill give this c++ a shot and if its too much ill get a basic book. Back in the day i had a Commodore 64 and it came with a book with programs you could put in the computer like 10 print "hello" 20 goto 10 and stuff like that, is that basic ? Man that commodore brings back good memories, 3:00 am playing "zork"