To have a full "Bible" in tuning GDAE I you dismissal in Titan's work made by Jean Barnwath whom you can download and print http://banwarth.free.fr/bouzouki.htm
The chords in GDAE and the other tunings are with this software, available here
In the software type "G" then choose the tuning, you will have the chords.
For the GDAE, here are the main things to know by heart, that is by not watching fingers taking place, to accompany quickly quite a lot of tunes.
Bitter to have learned the main things there are many of to learn it the others by going up neck without always playing with 4 double strings.
A chords on just 2 strings is possible, and will put of the nuance in your play.
Ok man, but I don't know the tunes which are to play in session !!!
At first recognize the fundamental. It is the bourdon of the piece. ( like the organ, and his little brother the uillean pipes)
D, Emin, G, Amin or A maj, Bmin are the main things
It is enough to ask to the instrumentalists to announce to you the tone and to arise you in modal chords on the corresponding bourdon.
Later that gets more complicated a little. You can make all the piece just with this modal chord, but 5 min of the same chord that risks to tire you |-o
Thus here is a recapitulating board various progressive chords
Common Major Progressions – 1655 or 145
Common Minor Progressions – 6545 or 6455 or 6415
(5 Chord always leads nicely into 1 chord so for example end verse on 5 and chorus starts on 1 chord)
Some advices of session players :
As long as you stay in the good tempo and as you always catch on the fundamental, that will pass in session, believe my experience.
The ideal being to be able to work with a magnetophone, or better, with a single musician to learn to know where to put your chords exactly and so to enrich your accompaniments.
A trick has to hold: play with your before arm more than with your wrist, you will win in power and in rhythmic
Try to be just a before time marked hair of hair: it is the "drive". It is a technique of drummer to drive(guide) the musicians or at the time exactly, never after! (Some make it, it is hideous, that weighs down the music)
Do not play too hardly at start, you cannot enough modulate afterward, and know how to save your energy