Im a new player to Bdo so bare with me please. I playesfor a couple of hours before the new season and changes. Now that im back an want to give the game a shot. I cant go to Magnus on top of that i can start the quest Adventure awaits. The character im trying to play is no longer a seasonal character.

Depending on where you started the game, the quest might be blocked. I recommend completing the starting quest for your region, afterwards you should be able to start the magnus questline

i dont know which quest that would be, i can post a screenshot just need to know what tab it would be.

Please show me screenshots of all of the main quest tab in the O menu

Hi, you started the old main quest with this character. Since your return, a new main quest has been added. However, before you can start that main quest, the old one needs to be finished (for Serendia / Calpheon). This is what stops you from accepting both the magnus questline and the new Serendia questline. In the pic below you see which quests these are. Navigate to the NPC that gives the next quest in that questline by opening the tab that is marked here, and clicking on the arrow key on the first quest in that tab. Continue questing until you get the first quest that has [Mediah] in the name. Afterwards, you will be able to continue with the "adventure awaits" questline, and can then also continue with the magnus. Be aware that new quests for the magnus unlock every time you finish a regional questline, so you cannot complete it fully before you also completed all main quests on that character.

Thanks, would you know how long this quest goes on for?

This video goes through all of the quests in the questline (starting from where you are now), and it takes about 2 hours for them. So this is about what you should expect: https://www.youtube.com/watch?v=FKIkGHIRq4A