[quote]Thank you for the reply! So do I just get content from those past seasons when playing the game at random? Or I have to find the tasks given from certain npc's? Sorry I play this game on and off and every time I come back there's so much to learn.[/quote]
You'll need to find the quest giver / quest node in order to start that content. Such as the quest node on the moon to rescue Osiris which is the start of the hunt seasonal content.