Don't bother looking if you dont know where it is, you cant fix it,go to Kwik Fit,or any major drive in oil change garage and let them do it,they will change the oil and most importantly the oil filter for about £30 Quid.The sump is the bit at the bottom of the engine that holds all the oil,looks like a sink viewed from the bottom. Go to a drive in and get an oil and FILTER change.I used to change my own oil and filter now I wouldn't bother,it 's as cheap as chips.
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix cars.