The five types of innkeeper skills.
Skills in the game can be divided into two types: those of the protagonist and those of the Special Workers.
Protagonist skills
A possible positive outcome of a chosen answer.
The innkeeper skills include: Oratory, Passion, Deception, Wisdom, and Intimidation. They are trained during conversations, when choosing an answer related to the skill. These answers may have two effects: they increase the level of the skill and affect the protagonist's relation with a given NPC, which in turn affects the dialogues and even the end of the game.
The dialogue window often says what effect a given skill has of succes (for example: an Intimidation-based answer may have a 20% chance of getting a positive result, while Passion may have 90%).
Special Workers Skills
The skills part of the Special Worker window.
Skills of your special workers include Strength, Dexterity, Intelligence, Charisma, and Endurance. They all can be trained and leveled up when using a special object.
Strength can be trained on a punching bag or fighting a dummy.
Darts, which can also be thrown at a dummy, train Dexterity.
Reading books increases Intelligence (it requires an object with books and a place to sit).
Charisma is leveled up when a character is talking to other guests, as well as using a dressing table or writing songs at a desk.
Endurance rises when a character uses a dummy or a punching bag.