Pancake mix is a waste of money. For very little more time, you can make your own pancake mix, and its cheaper and tastes better and you know what goes in it.
For good pancake mixes, I like to consult the Joy of Cooking.
The Joy of Cooking should be on your shelves at all time. If you had to move to southeast wherever, and could only take one cookbook and wouldn't have internet, you would take The Joy of Cooking. It's authoritative, and the recipes are actually good. It offers variations and different ideas.
A great cooking website is Cooking for Engineers. Because in the past, men have refused to admit that cooking is a science instead of a "domestic art", cooking has been viewed as "weak" and "feminine" which is a load of crap. But Engineers and scientists make great, if not anal-retentive cooks, because they are so good at following procedures.
So check out Cooking for Engineers here and discover the joy that is cooking.
Also buy the Joy of Cooking because its something everybody should own.