Instead of clipping my coupons (I DETEST clipping coupons), I write the date the coupon booklet came on the cover and keep the booklets whole. I know a plethora of websites that tell you where a coupon is based on the date that it came. It is a heck of a lot less hassle than clipping all the coupons and trying to organize them. Let those websites do the dirty work for you while you just clip the coupons you are going to use when you are going to use them. Easy-breezy!
And as always, don't forget to do a google search for printable grocery coupons before you shop!