Well, first off welcome to waterfowl hunting/calling. Prepare yourself for three months of no sleep, poor nutrition, financial ruin, cold feet, wet ears and hands and after the season the rest of the year will seem to playing in slow motion.
Exactly how you blow a goose call depends entirely on what kind of call you have. I read you were saying too-whit into the call. If you are blowing a flute style call, that would be correct, or at least a good place to start. Everything with a flute is spoken from the teeth, forward in the mouth. Conversely, a short reed style call requires you to drop your jaw a bit more. For honks I'd say who-it, flexing my stomach muscles and exhaling sharply on the 'it'. For clucks I simple say 'whit' very sharply. I use very little growl (typically) in a short reed goose call, and none at all in a flute. I control the pitch/growl of the call by using whats called back pressure. In laymens terms, that means how you position your hands. With a short reed, your hands are as important to good quality goose sounds as anything else. Only time I'll put larynx or vocalization into the call is when I'm doing moans/push moans or buzz clucks/shoreman honks.
Here is a link to a very good website that will give you a breakdown of every noise a goose makes (and some they can't) and what they mean, as well as an audio made by some of the best callers in the world. You can click on either the name of the caller, or down below on the name of the vocalization. What probably sounded just like honks and clucks to you, is acctually a very balanced and orchestrated chaos of about 30 different sounds goose callers make. Some of it applies only to competition, but the more sounds you can make on a goose call, the easier it will be for you to call geese effectively.
http://www.callingducks.com/talk_goose_main.aspx
As far as learning how to call goes, the best advice I can give you is to learn exactly how much pressure it takes to 'break' your call. Breaking or breaking over is when your call goes from making a buzz to making a high pitched note. A honk for example goes from low to high. What you as the caller needs to learn is exactly what it takes to make that call break, and commit that to muscle memory. That is the foundation of call control. Other than that, practice and practice and practice. There is only so much I can teach you in a written word.