Instead of trying to explain all the tips on how to start couponing, I recommend visiting the blogs listed below.
One piece of advice I do have it to pick one store to start with and then move on to another store once you have a handle of the first stores policies. Each store has a different coupon policy and it can be very confusing trying to learn it all. I started with Giant Eagle which has a pretty simple policy to learn.
Also, do not feel that you have to take advantage of every coupon deal available. It takes a while to learn when the products are at the lowest point (I'm still learning this) and it is easy to buy products that you don't need. :-)
And lastly, I get all my coupons from the newspaper and printing them from online. I read somewhere that the recommendation is to get one newspaper for every member in your family and that seems like that works well for me. Beware of printing coupons online - there are a lot of fraudulent coupons out there. Generally I only print from trusted sites (like coupons.com) or from the manufacturer's website.
Couponing 101
The Krazy Coupon Lady
Helpful Tips from Sisters Shopping on a Shoestring
Tips from My Litter
Giant Eagle (doubles coupons up to $.99)
Giant Eagle Coupon Policy
Shelf Price vs. Sale Price
Rite Aid
The Krazy Coupon Lady
Rite Aid How-To Video
CVS
The Krazy Coupon Lady
CVS How-To Video
My Litter
Walmart
The Krazy Coupon Lady
