why is ituned downloading the latest software twice and leaving my ipod in recovery mode? what happend to the first download?

hi, sorry im new to this smart technology, i really havnt a clue and it dosnt help that they just plonk it on your lap and expect you to know what your doing!

when i started up the ipod i went through all the setting up procedures, and then once done it told me that there is an update ready to install already! i mean i only just brought it! surly it dosnt need updating already? anyway so i tried updating it, but for some reason it kept saying it cannot connect to wifi, which is weird as i could access the Internet on it. so i plugged it into the computer, downloaded itunes and it asked if i wanted to do the update on there so i told it to find and install the update and so on, then it said it wanted to restore it to factory settings? so i just clicked yes and it put the ipod into "recovery mode" and started downloading the update which takes 4 hours! so i left it to do it over night, in the mean time i cannot use the devise as its in this recovery mode, in the morning it was complete so i got it to start downloading on the the ipod while i was at work. i get back from work and there is a pop up message saying 'i tunes has detected an ipod which is in recovery mode, you must restore this ipod before it can be used on itunes' well i thought this is what i left it to do anyway?? i thought it was updating my ipod and restoring it, now i still have no ipod i can use and its downloading the software again! thats another 4hours waiting for something im not sure will work? and another 4hours with out use of the devise, which i can live with.....

Hmmm.. what is DFU mode?

yeah the download completed,

would it be the virus software i disable or would the computer have its own defences? haha, im sorry but im an outside person not really invloved in these things!