zelda shares his magnum opus - an exceptionally thorough Gauntlet guide, aimed specifically at new players.
He starts with several guidelines for deck construction in Gauntlet, explaining how to choose a suitable spread of mana costs (or mana curve) and when you should prioritize completing your mana curve over simply choosing the most powerful cards. After providing a cheat-sheet of important rules for piloting your deck, he ranks the viability of all 12 generals and proceeds to evaluate every single card in Duelyst.
Each card is given a 0-100 rating and a short paragraph of justification - faction cards that work best with a particular general have two separate reviews, along with modifiers for each general to show how useful different Neutral minions are with that general. Although exclusively picking the highest-rated cards and ignoring your mana curve is a very bad idea, these ratings help new players to filter out the most relevant cards and provides a solid foundation for new players to learn about Gauntlet.
The guide embedded here will update automatically whenever zelda updates his original Google Document, which can be found here.