I know those quests gives barely anything out, but if I wanted to do all of them, is there a way to exactly know what to do from each quest?

Is there a guide available covering this?

Thanks in advance.

Guide? dunno, there should be some page with all quests listed, linked in a ton of topics so far...

Other then that use common sense... look at where you get the quest, think of what a game might have that you should know...

Near a mailbox -> might be the one that explains you how to send a mail?
Near a petvendor -> might be that you need to get a pet?
Near a ranked battle dude -> might be that you need to do a ranked battle?

Anything left in the end think of what else the game might wanna teach you
- make a party
- teleporting
- identify item
- crafting

and so on...