Hi there Cloudwatoka currently lvl 19 in Monster Paradise. Current guild is lvl 1with 12 out of 20 people so far. So i am posting this for anyone who may want to comment or question about guilds. I myself have just joined one and wondering how the "GEXP" will work.
I hope you all enjoy the game.

If you join a guild, you get a little bonus for beeing a guildie. (So far i've noticed it's always +1EXP per 10feet)
But the Guild Monster bonuses are yet turned off i think.

the guild monster is what gives you the +exp

as of right now i do not believe the guild exp is currently implemented into the game, right now all a guild can do is do dark events and hatch the egg (which seems to be the same monster for everyone)

Having that little bonus does help out. Guess we will have to wait and see for the rest of it.