You will be able to learn most things just by following the quests/tutorials at the beginning of the game, but here are some really good info resources:
Eden Eternal Official Wiki
(lots of good guides and such)
If you have played MMOs before, you should find your way pretty easily. One nice thing about this game is that you can gain any of the classes and switch between them to try out different ways of playing.
If you have any specific questions/issues you come across, feel free to ask a Game Sage
or another player in-game, on the forums, or the shoutbox.
Welcome to Eden!