Cheesey:
right.
well, I can tell you how I do it - probably not the most efficient or effective way, but there you go
so, you have managed to get some music into itunes, right? and you are (relatively) happy with that process?
now, open up itunes.
wait a while (can sometimes take a while to fully open up, ime). make sure you have the latest version of anything - it may well prompt you to upgrade/download new version etc. do this, and wait until it has finished.
then plug in your ipod.
on the menu on the left, you shoudl get the ipod appearing - eg, the headings on the lefthand menu will be: LIbrary, Store, Devices, Genius, etc. Devices is where your ipod will appear - if it is the first time you have plugge dit in, it will ask you to name it, iirc.
the yellowish/beige bar at the top centre of the window tells you what is happening - eg, it may say "syncing ipod, step 1 of 4" or similar.
wait until you get the Apple symbol back in this bar.
so, on the left, you have your ipod named, a little charging icon, and then an eject symbol - you click on this when you have finished, to eject your ipod - leave it alone for now.
on my itunes, the main window on opening shows me my library - music I have loaded into itunes. you can set this up in various ways, to show you your music how you want - mine is organised alphabetically by artist (I htink dh prefers it htis way).
click on your ipod's name in the left hand menu, and the screen will change. it will show you a nice picture of your ipod, with some technical info, and underneath there are options. mine is set up as follows:
open itunes when this ipod is connected is ticked, as is manually manage music and videos (ther eis an auto sync option, i think, but I wanted to be more in control ; also dh and I share itunes, but have separate ipods, so I don't want all his shit on my ipod )
the bottom of the main window now shows you a nice little bar graph of content on your ipod - colour coded as to content, eg audio is blue, video is purple etc.
across the top of this main window (underneath the Apple yellow/beige bar), you now have a few options. "Summary" shoudl be highlighted, as this is what you are looking at.
click on "music"
the screen changes, and you now have some options:
click "sync music", and then either "entire music library" (if you have space/want allthe music on there), or "selected playlists artists and songs"
I use "selected artists etc", for reasons described earlier!
scroll down a bit, and you can tick various options, according to what you want to put on your ipod.
ignore the playlists box for now - haven't done that yet (I assume)
similarly, I would not necessarily sync via means of "genre" - itunes sometimes has some odd ideas as to what music is what genre and you coudl get soem odd choices
I would choose either via artist (which means you get all the albums by that artist loaded up) or by album - again, the ones you tick are the ones that will be synced.
once you have chosen what you want, click "Apply" in the bottom righthand corner.
then wait.
the top middle bar (the apple/yellow one) will change - and tell you what is happening.
all the while it is syncing DO NOT DISCONNECT.
wait until it says "complete" or similar (sorry, in the middle of a major re-sync, so will be a while before I know what it says - mind like a sieve!)
the eject button next to your ipod name in the lefthand window will be twirling about to let you know you are doing something, too.
twiddle your fingers for a bit, then, once all is complete and happy, click the little eject icon, wait (if you ipod is acouple of years old) until the ipod window (if there is one) or the Apple bar at the top says "ok to disconnect" and then unplug the ipod.
go on your way, happy, and able to listen to music on your ipod
sorry for the length - if there is anything at any point that is not clear, please do ask.
I am no expert, but can mange to work out most things - eventually!