Yeah in alpha there was a quest step after Rhazzad that told you to go back to Sgt Knox, or perhaps it was a new quest but either way it's missing in this version and so it doesn't really tell you. Basically though each time you finish an area you go back to Sgt Knoc for any new quests or missions.
Conduit of Time: 7 Chapter Campaign in progress (Currently Chapter 6 Released)
Search @Longshire for 12 Foundry Quests, all are story driven adventures
Story -- Medium/Heavy, Combat -- Light/Medium, Lore -- Medium/Heavy
Maybe do a Dungeons/Skirmishes/PvP/Crafting/Foundry quests to get your level up a bit more? Most of those can be found by pressing L, or N for crafting (though that one is much slower and more supplementary).
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Search @Longshire for 12 Foundry Quests, all are story driven adventures
Story -- Medium/Heavy, Combat -- Light/Medium, Lore -- Medium/Heavy
Drakeos Shadowbow - 60 Combat Pathfinder Hunter Ranger (Alt/retired)
Falados - Drow (Mez) Level 60 Trickster Rogue - Offically retired
Drakeos - Drow (Mez) Scourge Warlock/Druid (retired)