Me and my friends just started to play Dragon Ball
and we're really confused on how the quests work. we can follow the red arrow, but some quests just dont give us any clue wat to do ( we dont understand) is there any tips or a guide we can use to help us with those quests

Check out these guides:

http://www.dbocom.com/forum/showthread.php?t=5847#quest

http://dbocom.com/forum/showthread.php?t=11859

neither of those guides actually helped me:(

the first one has a list of the quest that dont envolve killing mobs .. sometimes you have to kill a mob with auto-fight and sometimes you have to finish them with a skill move though.. but if your just starting than its just killing the right once ,, using your scouter by pressing T will show you if its the right one ( a orange smiley thingy will show)

its not the mob part. some quests have nothing to do with mobs like scanning making pet etc..
those are the ones im having trouble with

I avoid any quests that dont have markers.
The ones that don't have markers are normally quests like "Scan person A", "Get skill B", "Join a guild", ect.

so its fine to skip those? i dont wanna wanna miss the story line :p

u can't understand the story line anyway bro

the animation. pictures means a thousand words

Animations only really happen in Time Machine Quests.
General quests dont have any animations :V