PAS - power steering pump
WP - water pump
G - guide
GEN - alternator
T - tensioner
CS - crankshaft
AC - air con pump

Tensioner should be a 15mm socket/spanner and is spring loaded
turn it clockwise if i remember untill you can slip the belt off then slowly let tensoin off. To refit just turn clockwise again untill you can slip the belt back on.
Easy peasy