Hi Sam
A320 Flap angles in degrees ... CONF is Airbus speak for configuration...
CONF.....SLAT.....FLAP
0 ......not surprisingly, zero.
1 ..........18.........0 when selected above 100kts.
1 ..........18........10 when selected below 100 kts (i.e. on the ground)
2 ..........22........15
3 ..........22........20
FULL .....27........35
You may also like to know that when flaps are extended (any position) the ailerons droop by 5 degrees.
For aerodynamic gen try googling aerofoils which should lead you to any number of "ground school" sites.
Good luck
TP