The Rogue: Better at the Game Than You Are
The rogue is one of the most beginner-friendly classes in 5e, and the reason is counterintuitive. It is not because the class is simple. It is because almost everything the rogue does is an extension of something the game already does.
Sneak Attack: Not What You Think
The biggest misconception about Sneak Attack is baked into the name. You do not need to be sneaking. You do not need to be hidden. You need either advantage on the attack roll, or an ally within 5 feet of your target. That second condition is the one that matters in practice, because your barbarian friend is going to be standing next to everything. Walk up, stab, collect your bonus damage. Every turn. No resource spent.
The damage scales aggressively: 1d6 at level 1, up to 10d6 at level 19. On a critical hit, you double all of those dice. If you have ever wondered why your table keeps a spare bag of dice around, a high-level rogue is your answer.
The Class That Bends the Rules You Already Know
Cunning Action at level 3 lets you Dash, Disengage, or Hide as a bonus action. These are things any character can do, but burning your action to do them is usually a bad trade. For the rogue, it is free. The standard combat loop writes itself: move in, Sneak Attack, Disengage as a bonus action, retreat out of reach. Your enemy either eats an opportunity attack from someone else or wastes their turn chasing you.
Evasion at level 7 follows the same pattern. Dexterity saving throws against area effects already give you half damage on a pass. Evasion slides the whole table down: pass means zero, fail means half. Uncanny Dodge halves incoming damage from a single attacker as a reaction. None of these abilities require a resource pool. They just work.
Reliable Talent at level 11 is where the rogue stops being a skilled character and becomes a force of nature in skill challenges. Any ability check you are proficient in cannot roll below a 10. Pair that with Expertise doubling your proficiency bonus on up to four skills, and you have a character who functionally cannot fail at the things they are built for. Worth talking to your table about how this interacts with any critical failure house rules you are running, because the rules as written do not include critical failures at all.
The level 20 capstone, Stroke of Luck, lets you choose not to miss an attack or treat a d20 roll as a natural 20, once per short rest. It works. It is also about as flavorful as a rice cake. For a class this defined by personality and style, “I decide to succeed” is a flat landing.
Still, from level 1 to level 18, the rogue is one of the most consistent and teachable classes in the game. If you have a new player at your table, put them in leather armor and hand them a rapier. They will figure out the rest.