GT Sport: giving away my G29, and need to explain wheel buttons, mapping ...

[Supercededman]

I mistakenly posted this on the GT4 forum (mods, can you delete?).

I am giving my old G29 and a copy of GT Sport to a friend who has no idea what the buttons do, or how to map them. Unfortunately I can't be with him to quickly explain.

Can anyone point me to a handy resource?