Couponing

Couponing

I've been trying to pick up the Sunday paper and cut out coupons, but I'm still new to the whole couponing thing. Does anyone have any basic advice or know of any good websites on the subject? I hear phrases like double coupons and have no idea what they mean. Also, I'm wondering, if I have two coupons for the same product, I can only use one, right? So is it pointless to collect the same coupons week after week for, say, Crest toothpaste? I need some beginner's advice on how to get the most out of this little endeavor. Oh, and I'm in Orlando, FL, for anyone who lives in the area and is familiar with the local grocery stores' policies. Thanks.
UPDATED MY KAWAII ROOM~

UPDATED MY KAWAII ROOM~

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Unknown citrus tree?

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Bedroom update!

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our 2 japanese maples

our 2 japanese maples