If you have iTunes 11 turn on the Sidebar. Go to iTunes>View and click on Show Sidebar. You can also do a Crtl+S to show the sidebar. The sidebar is where Devices appears. and Control+B to show the Menu bar
To sync to your iPod go to iTunes>Help>iTunes Help>Sync your iPod.... and follow the instructions. As you found out, there have been some changes from previous versions.