Need much more information for this one
You mentioned using extract, so should I assume that your only using extract? If this is only extract then I'm afraid to say your in the wrong subforum.
Or are you trying an all grain brew/ or perhaps a partial mash, which is an extract brew with some specialty grains?
Either way, you certainly don't need a kit to brew. Extract kits usually consist of extract, yeast, an hops. Without these 3 components you might want to hold off on brewing.
Could you please list exactly what ingredients you have?