Just some advice, I would mention to your superiors, in a non-confrontational way, that you aren't entirely experienced, but are eager to learn. They may have some sort of funds and resources available to set you off on the right track. Also, it's not really fair to jump into something blind and risk destroying their network, or worse, getting yourself fired. Your best knowledge will come from experience, though. If you have a printer, fax, etc. at home and a few PC's lying around, practice networking them and fiddling around with settings and such. Should help you be more confident when at work tackling the real thing. Good luck.
To be honest my superior is my father... and yeah i dont think he is truly understanding of how much him putting me here in this position has stressed me out... but he also doesnt really care considering he has owned and ran this business for 30+ years he says its due time i learn my part so he can hand it over cause hes ready to live on the lake...
i dont really break down any computers at all or mess directly with a network either that im aware of... as stated before most of my IT work is just connectivity on multi functional copiers (scan,fax,copy,print) the more i work with it the easier it is seeming to be but none the less when i asked for schooling pops said hell nah... learn it how everyone else did... rough way to learn considering i was grown up on tests and actual informative papers being handed to me... but ill manage i guess ;P