The "real" goose hunters (I'm aparently not one of them) will throw out 10 - 20 dozen, I've heard of spreads as big as 1500. But don't worry about those big numbers. When I first started I used one dozen silouttes and got my share of birds. I'd recommed you pick up a dozen shells, that will suit you just fine. The first dozen shells I baught were Feather Flex, Cabelas used to carry them but don't anymore. I baught a dozen for $69.00, they are made out of foam and are very light to carry (but also not good for windy situations) And buy, or make, a flag, they work great for getting the attention of birds that normally woulnd't pay any attention to a small flock of deeks. You can invest in a call, but don't take it into the field just yet. You don't want to use a call unless you are comfortable with it, one bad note is enough to flare a flock. And what ever you do, make sure you are concealed well
I love my job, it fascinates me. I can sit and look at it for hours.