Recently I released a new guide on advanced concepts that you might have skipped or that are not explained in in-game tutorials yet
00:24 Enchanting Characteristics and Spells
03:20 Passives and Upgrading
03:56 Deck of Understandings
05:05 Redraw
05:28 Upkeep
06:47 Autocast
08:45 Damage Estimations
09:36 Skill Costs
09:57 Movement Predictions and Strategic Mode