I can't say I have excellent experience with gers but I do have
a fair share...
Well, some gers simply dun like the idea of being fingered and as
such, it should be respected and not forcefully do so. There are
other foreplay to be performed besides fingering,
right....^_^
I never believe in "Master" technique of fingering will apply to
all gers. Well, each and every ger out there is different and will
react differently. There are techniques that may suits most gers,
but definitely not all.
The best technique is to be sensitive to ur ger, feel her
reactions, feel her body, and move with the feel and rythm.
Not too sure I have made a ger squirt b4 or not, maybe once or
rather one ger...But I sure did made many experienced orgasm for
their first time in their life when I finger them....some even
multiple orgasm ...... 
