for info regarding what polishes to use I would recommend the 2 following site...

AUTOPIA a site in the states dedicated to car detailing... some awesome info on there

and

DETAILING WORLD a UK based forum

but i polish using

Poorboys to remove swirls etc (applied via buffer)
Klasse All In One (or carlack 68)
Nattys Blue Carnauba Wax or P21s Carnauba wax