How do you do this in iTunes?

What I want to do in iTunes is this: click on a particular song and be able to select/highlight it and a certain number of songs from that point downwards (or upwards). Maybe this is an intuitive thing, but I’m not at all familiar with Mac-ish applications. Help, please?

You can hold down shift to select a range of items. Click your first song to select it, then hold shift and click the last song in the range you want. Also, if you hold shift and press the up or down arrow key, your selected range will expand.

Hey, good deal! Thanks very much!

And in case you’re wondering, if you want to pick multiple elements that aren’t next to each other, you normally Command-click (AKA Open-apple AKA Cloverleaf-thingy). This would be the near equivalent of Ctrl-click in Windows.
Ctrl is mostly equivalent to Cmd with respect to other commands, as you may have noticed. For example, Cmd/Ctrl-S for save, Cmd/Ctrl-V for paste, etc.

Also to reiterate, this works in most windows applications too. Just hold down Shift and click to select everything between the previous icon and the last icon. If you want to select another group, hold down control and shift to start on the next series of things to click and then click on the last while still holding ctrl and shift.