As tittle say, I started playing in Interlude servers but I dont know so much (cause I playied H5 servers) so my question is how to farm giant codex and giant codex mastery (if exists in interlude) there are quests? there are mobs tht drop it? tell me the way to take them. Thanks.

You receive one book of giants from your 3rd class change quest....
After that,you can get more of those by purchasing them with
noblesse gatepasses(earned with oly battles) and from castle lords(via adena i think)..........

how much adena with castle lord?
and giant codex mastery exists?

giant's codex-mastery exists and it can be dropped from rb's,if i'm not mistaken(google that
and see the rb's.I think five of them drop it.)

As for the book of giants.If your clan owns a castle,then you'll need 500k or so
for the seeds required and another 50k for the creation(and all that for a single book..)!

thanks for informarmation =)

but what is max enchant in Interlude?

mastery books from Castle Instance, normals from Oly/3rd class quest/Manor system(u need castle tho)

interlude and gc mastery?
if i remember correctly max skill enchant was 15 but get +15 skill with gc was unreall
and gc can get from oly/manor