The in-game achievement map should serve as a roadmap for progression through the DragonRealm mod.
-Start in the center with your first dragon kill. That unlocks your base dragon tools in the crafting table.
-To learn a Knowledge Tome or Dragon Scroll, you must first kill a dragon of that level.
-The tomes for each dragon unlocks the ability to upgrade tools/armor to higher levels.
-To wear upgraded dragon armor, you must have mastered that type of dragon with 5 kills.