My favorite stores:

When starting couponing it is very tempting to go to each store and nab each deal.  Many stores have great oppourtunity for the thrifty.  Target, Toys-R-Us, Paul's, Walgreen's, Walmart, Albertson's, Winco; all of them have great deals.  I find that my top two stores are Walgreen's and Albertson's.  This is based on the fact that I work near these stores and am able to whip thru on the way to or from home.  Walgreen's and Albertson's are able to cater to couponers because all of their prices are not rock bottom low and all of their shoppers are not buying things on sale.  So my advice, start with one store.  Learn their ins and outs then get the next store under your belt.  This may avoid burn out due to confusion.