when should i actually take clones?

And how should I go about all of it? Help please. I kinda forgot completely about doing this and I'm afraid it may be too late.

you can take them indefinately from the plant at whatever stage, but quickest results would be best to take cuts 3 weeks into flower and anytime before that, otherwise you will be able to get the sucker to root, but you will also be faced with a task of revegging it which will take you longer.

http://www.youtube.com/watch?v=nfxHrcpTbOU&feature=related

this guy does it just how i do and i have successful results, couldn't think of a better way and he explains it very well

he uses a different growth hormone so that part may very